Implement V2 registration support

The bundled web vault (2026.6.4) requires seven query parameters in the
accept-organization URL and rejects the invite client-side when any of them is
null, showing only "Unable to accept invitation" without sending a request to
the server.

send_invite() never appended initOrganization, and appended
orgUserHasExistingUser only for users who already had an account, so every
organization invitation e-mail produced a link that could not be accepted.

Web vault 2026.4.1 (shipped with 1.36.0) read these parameters null-safely,
which is why this only appeared in 1.37.0.

Fixes #7481

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

.env.template

@@ -324,6 +324,14 @@
 ## Set to the string "none" (without quotes), to disable any headers and just use the remote IP
 # IP_HEADER=X-Real-IP
 
+## Which addresses the header above is accepted from, defaults to "local".
+## Anyone able to reach Vaultwarden can set the header, and the client IP is used for the login and
+## admin rate limits, so it is only trusted when the request comes from a proxy listed here.
+## "local" accepts it from any non global address, which covers a reverse proxy running on the same
+## host or container network. Use "all" to accept it from anywhere, or list the addresses of your
+## proxy as IPs and CIDR ranges if it connects from a public address.
+# IP_HEADER_TRUSTED_PROXIES=local
+
 ## Icon service
 ## The predefined icon services are: internal, bitwarden, duckduckgo, google.
 ## To specify a custom icon service, set a URL template with exactly one instance of `{}`,
@@ -461,6 +469,13 @@
 ## Note that this applies to both the login and the 2FA, so it's recommended to allow a burst size of at least 2.
 # LOGIN_RATELIMIT_MAX_BURST=10
 
+## Number of seconds, on average, between requests from the same IP address to one of the rate limited
+## unauthenticated endpoints, like the password hint, the account recovery mails or accessing a Send.
+# UNAUTHENTICATED_RATELIMIT_SECONDS=60
+## Allow a burst of requests of up to this size, while maintaining the average indicated by `UNAUTHENTICATED_RATELIMIT_SECONDS`.
+## This budget is shared between all of those endpoints, so it is more lenient than the login one.
+# UNAUTHENTICATED_RATELIMIT_MAX_BURST=50
+
 ## BETA FEATURE: Groups
 ## Controls whether group support is enabled for organizations
 ## This setting applies to organizations.

.github/workflows/build.yml

@@ -62,7 +62,7 @@ jobs:
 
       # Checkout the repo
       - name: "Checkout"
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
           fetch-depth: 0

.github/workflows/check-templates.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       # Checkout the repo
       - name: "Checkout"
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
       # End Checkout the repo

.github/workflows/hadolint.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       # Start Docker Buildx
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4.1.0
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
         # https://github.com/moby/buildkit/issues/3969
         # Also set max parallelism to 2, the default of 4 breaks GitHub Actions and causes OOMKills
         with:
@@ -30,24 +30,25 @@ jobs:
           driver-opts: |
             network=host
 
-      # Download hadolint - https://github.com/hadolint/hadolint/releases
-      - name: Download hadolint
-        run: |
-          sudo curl -L https://github.com/hadolint/hadolint/releases/download/v${HADOLINT_VERSION}/hadolint-$(uname -s)-$(uname -m) -o /usr/local/bin/hadolint && \
-          sudo chmod +x /usr/local/bin/hadolint
-        env:
-          HADOLINT_VERSION: 2.14.0
-      # End Download hadolint
       # Checkout the repo
       - name: Checkout
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
       # End Checkout the repo
 
       # Test Dockerfiles with hadolint
-      - name: Run hadolint
+      # Uses the Docker-based action (hadolint pre-bundled in ghcr.io/hadolint/hadolint:v2.14.0-debian)
-        run: hadolint docker/Dockerfile.{debian,alpine}
+      # so no binary is downloaded at runtime. Pinned by commit SHA for supply-chain safety.
+      - name: Run hadolint on Dockerfile.debian
+        uses: hadolint/hadolint-action@2332a7b74a6de0dda2e2221d575162eba76ba5e5 # v3.3.0
+        with:
+          dockerfile: docker/Dockerfile.debian
+
+      - name: Run hadolint on Dockerfile.alpine
+        uses: hadolint/hadolint-action@2332a7b74a6de0dda2e2221d575162eba76ba5e5 # v3.3.0
+        with:
+          dockerfile: docker/Dockerfile.alpine
       # End Test Dockerfiles with hadolint
 
       # Test Dockerfiles with docker build checks

.github/workflows/release.yml

@@ -58,13 +58,13 @@ jobs:
 
     steps:
       - name: Initialize QEMU binfmt support
-        uses: docker/setup-qemu-action@06116385d9baf250c9f4dcb4858b16962ea869c3 # v4.1.0
+        uses: docker/setup-qemu-action@96fe6ef7f33517b61c61be40b68a1882f3264fb8 # v4.2.0
         with:
           platforms: "arm64,arm"
 
       # Start Docker Buildx
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4.1.0
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
         # https://github.com/moby/buildkit/issues/3969
         # Also set max parallelism to 2, the default of 4 breaks GitHub Actions and causes OOMKills
         with:
@@ -77,7 +77,7 @@ jobs:
 
       # Checkout the repo
       - name: Checkout
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         # We need fetch-depth of 0 so we also get all the tag metadata
         with:
           persist-credentials: false
@@ -106,7 +106,7 @@ jobs:
 
       # Login to Docker Hub
       - name: Login to Docker Hub
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
@@ -121,7 +121,7 @@ jobs:
 
       # Login to GitHub Container Registry
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
@@ -137,7 +137,7 @@ jobs:
 
       # Login to Quay.io
       - name: Login to Quay.io
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           registry: quay.io
           username: ${{ secrets.QUAY_USERNAME }}
@@ -185,7 +185,7 @@ jobs:
 
       - name: Bake ${{ matrix.base_image }} containers
         id: bake_vw
-        uses: docker/bake-action@6614cfa25eff9a0b2b2697efb0b6159e7680d584 # v7.2.0
+        uses: docker/bake-action@d3418bd7d0e9324001bca92fa8ba175ea7e6dc9b # v7.3.0
         env:
           BASE_TAGS: "${{ steps.determine-version.outputs.BASE_TAGS }}"
           SOURCE_COMMIT: "${{ env.SOURCE_COMMIT }}"
@@ -237,7 +237,7 @@ jobs:
 
       # Upload artifacts to Github Actions and Attest the binaries
       - name: Attest binaries
-        uses: actions/attest@59d89421af93a897026c735860bf21b6eb4f7b26 # v4.1.0
+        uses: actions/attest@f7c74d28b9d84cb8768d0b8ca14a4bac6ef463e6 # v4.2.0
         with:
           subject-path: vaultwarden-${{ env.NORMALIZED_ARCH }}
 
@@ -249,7 +249,7 @@ jobs:
 
   merge-manifests:
     name: Merge manifests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     needs: docker-build
     environment: 
       name: release
@@ -272,7 +272,7 @@ jobs:
 
       # Login to Docker Hub
       - name: Login to Docker Hub
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
@@ -287,7 +287,7 @@ jobs:
 
       # Login to GitHub Container Registry
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
@@ -303,7 +303,7 @@ jobs:
 
       # Login to Quay.io
       - name: Login to Quay.io
-        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
+        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
         with:
           registry: quay.io
           username: ${{ secrets.QUAY_USERNAME }}
@@ -365,7 +365,7 @@ jobs:
       # Attest container images
       - name: Attest - docker.io - ${{ matrix.base_image }}
         if: ${{ vars.DOCKERHUB_REPO != '' && env.DIGEST_SHA != ''}}
-        uses: actions/attest@59d89421af93a897026c735860bf21b6eb4f7b26 # v4.1.0
+        uses: actions/attest@f7c74d28b9d84cb8768d0b8ca14a4bac6ef463e6 # v4.2.0
         with:
           subject-name: ${{ vars.DOCKERHUB_REPO }}
           subject-digest: ${{ env.DIGEST_SHA }}
@@ -373,7 +373,7 @@ jobs:
 
       - name: Attest - ghcr.io - ${{ matrix.base_image }}
         if: ${{ vars.GHCR_REPO != '' && env.DIGEST_SHA != ''}}
-        uses: actions/attest@59d89421af93a897026c735860bf21b6eb4f7b26 # v4.1.0
+        uses: actions/attest@f7c74d28b9d84cb8768d0b8ca14a4bac6ef463e6 # v4.2.0
         with:
           subject-name: ${{ vars.GHCR_REPO }}
           subject-digest: ${{ env.DIGEST_SHA }}
@@ -381,7 +381,7 @@ jobs:
 
       - name: Attest - quay.io - ${{ matrix.base_image }}
         if: ${{ vars.QUAY_REPO != '' && env.DIGEST_SHA != ''}}
-        uses: actions/attest@59d89421af93a897026c735860bf21b6eb4f7b26 # v4.1.0
+        uses: actions/attest@f7c74d28b9d84cb8768d0b8ca14a4bac6ef463e6 # v4.2.0
         with:
           subject-name: ${{ vars.QUAY_REPO }}
           subject-digest: ${{ env.DIGEST_SHA }}

.github/workflows/trivy.yml

@@ -33,7 +33,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
 
@@ -50,6 +50,6 @@ jobs:
           severity: CRITICAL,HIGH
 
       - name: Upload Trivy scan results to GitHub Security tab
-        uses: github/codeql-action/upload-sarif@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4.36.2
+        uses: github/codeql-action/upload-sarif@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4.37.3
         with:
           sarif_file: 'trivy-results.sarif'

.github/workflows/typos.yml

@@ -16,11 +16,11 @@ jobs:
     steps:
       # Checkout the repo
       - name: Checkout
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
       # End Checkout the repo
 
       # When this version is updated, do not forget to update this in `.pre-commit-config.yaml` too
       - name: Spell Check Repo
-        uses: crate-ci/typos@37bb98842b0d8c4ffebdb75301a13db0267cef89 # v1.47.2
+        uses: crate-ci/typos@bee27e3a4fd1ea2111cf90ab89cd076c870fce14 # v1.48.0

.github/workflows/zizmor.yml

@@ -14,17 +14,17 @@ on:
 jobs:
   zizmor:
     name: Run zizmor
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       security-events: write # To write the security report
     steps:
       - name: Checkout repository
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
 
       - name: Run zizmor
-        uses: zizmorcore/zizmor-action@5f14fd08f7cf1cb1609c1e344975f152c7ee938d # v0.5.6
+        uses: zizmorcore/zizmor-action@6fc4b006235f201fdab3722e17240ab420d580e5 # v0.6.1
         with:
           # intentionally not scanning the entire repository,
           # since it contains integration tests.

.pre-commit-config.yaml

@@ -18,7 +18,7 @@ repos:
 
   # When this version is updated, do not forget to update this in `.github/workflows/typos.yaml` too
   - repo: https://github.com/crate-ci/typos
-    rev: 37bb98842b0d8c4ffebdb75301a13db0267cef89 # v1.47.2
+    rev: bee27e3a4fd1ea2111cf90ab89cd076c870fce14 # v1.48.0
     hooks:
       - id: typos
 

.typos.toml

@@ -15,6 +15,7 @@ extend-ignore-re = [
     "(?i)helo_name",
     "Server name sent during.+HELO",
     # COSE Is short for CBOR Object Signing and Encryption, ignore these specific items
+    "COSE",
     "COSEKey",
     "COSEAlgorithm",
     # Ignore this specific string as it's valid

Cargo.toml

@@ -1,6 +1,6 @@
 [workspace.package]
 edition = "2024"
-rust-version = "1.94.0"
+rust-version = "1.95.0"
 license = "AGPL-3.0-only"
 repository = "https://github.com/dani-garcia/vaultwarden"
 publish = false
@@ -65,7 +65,7 @@ syslog = "7.0.0"
 macros = { path = "./macros" }
 
 # Logging
-log = "0.4.32"
+log = "0.4.33"
 fern = { version = "0.7.1", features = ["syslog-7", "reopen-1"] }
 # We need the `log` feature for `tracing` to enable logging for several crates to work, like lettre or webauthn-rs
 tracing = { version = "0.1.44", features = ["log"] }
@@ -75,7 +75,7 @@ dotenvy = { version = "0.15.7", default-features = false }
 
 # Numerical libraries
 num-traits = "0.2.19"
-num-derive = "0.4.2"
+num-derive = "0.5.1"
 bigdecimal = "0.4.10"
 
 # Web framework
@@ -89,8 +89,8 @@ rmpv = "1.3.1" # MessagePack library
 dashmap = "6.2.1"
 
 # Async futures
-futures = "0.3.32"
+futures = "0.3.33"
-tokio = { version = "1.52.3", features = [
+tokio = { version = "1.53.1", features = [
     "fs",
     "io-util",
     "net",
@@ -99,14 +99,14 @@ tokio = { version = "1.52.3", features = [
     "signal",
     "time",
 ] }
-tokio-util = { version = "0.7.18", features = ["compat"] }
+tokio-util = { version = "0.7.19", features = ["compat"] }
 
 # A generic serialization/deserialization framework
-serde = { version = "1.0.228", features = ["derive"] }
+serde = { version = "1.0.229", features = ["derive"] }
-serde_json = "1.0.150"
+serde_json = "1.0.151"
 
 # A safe, extensible ORM and Query builder
-diesel = { version = "2.3.10", features = ["chrono", "r2d2", "numeric"] }
+diesel = { version = "2.3.11", features = ["chrono", "r2d2", "numeric", "64-column-tables"] }
 diesel_migrations = "2.3.2"
 
 derive_more = { version = "2.1.1", features = [
@@ -116,24 +116,24 @@ derive_more = { version = "2.1.1", features = [
     "from",
     "into",
 ] }
-diesel-derive-newtype = "2.1.2"
+diesel-derive-newtype = "2.1.3"
 
 # SQLite, statically bundled unless the `sqlite_system` feature is enabled
 libsqlite3-sys = { version = "0.37.0", optional = true }
 
 # Crypto-related libraries
-rand = "0.10.1"
+rand = "0.10.2"
 ring = "0.17.14"
-rustls = { version = "0.23.40", features = ["ring", "std"], default-features = false }
+rustls = { version = "0.23.42", features = ["ring", "std"], default-features = false }
 subtle = "2.6.1"
 
 # UUID generation
-uuid = { version = "1.23.2", features = ["v4"] }
+uuid = { version = "1.24.0", features = ["v4"] }
 
 # Date and time libraries
 chrono = { version = "0.4.45", default-features = false, features = ["clock", "serde"] }
 chrono-tz = "0.10.4"
-time = "0.3.47"
+time = "0.3.54"
 
 # Job scheduler
 job_scheduler_ng = "2.4.0"
@@ -142,7 +142,7 @@ job_scheduler_ng = "2.4.0"
 data-encoding = "2.11.0"
 
 # JWT library
-jsonwebtoken = { version = "10.4.0", default-features = false, features = ["rust_crypto", "use_pem"] }
+jsonwebtoken = { version = "11.0.0", default-features = false, features = ["rust_crypto", "use_pem"] }
 
 # TOTP library
 totp-lite = "2.0.1"
@@ -179,7 +179,7 @@ percent-encoding = "2.3.2" # URL encoding library used for URL's in the emails
 email_address = "0.2.9"
 
 # HTML Template library
-handlebars = { version = "6.4.1", features = ["dir_source"] }
+handlebars = { version = "6.4.3", features = ["dir_source"] }
 
 # HTTP client (Used for favicons, version check, DUO and HIBP API)
 reqwest = { version = "0.13.4", default-features = false, features = [
@@ -203,25 +203,25 @@ reqwest = { version = "0.13.4", default-features = false, features = [
 hickory-resolver = "0.26.1"
 
 # Favicon extraction libraries
-html5gum = "0.8.3"
+html5gum = "0.8.4"
-regex = { version = "1.12.3", default-features = false, features = [
+regex = { version = "1.13.1", default-features = false, features = [
     "perf",
     "std",
     "unicode-perl",
 ] }
 data-url = "0.3.2"
-bytes = "1.11.1"
+bytes = "1.12.1"
 svg-hush = "0.9.6"
 
 # Cache function results (Used for version check and favicon fetching)
-cached = { version = "1.1.0", features = ["async"] }
+cached = { version = "2.0.2", features = ["async"] }
 
 # Used for custom short lived cookie jar during favicon extraction
 cookie = "0.18.1"
 cookie_store = "0.22.1"
 
 # Used by U2F, JWT and PostgreSQL
-openssl = "0.10.80"
+openssl = "0.10.81"
 
 # CLI argument parsing
 pico-args = "0.5.0"
@@ -230,6 +230,9 @@ pico-args = "0.5.0"
 pastey = "0.2.3"
 governor = "0.10.4"
 
+# CIDR parsing for the trusted proxies of the client IP header
+ipnet = "2.12.0"
+
 # OIDC for SSO
 openidconnect = { version = "4.0.1", default-features = false }
 moka = { version = "0.12.15", features = ["future"] }
@@ -241,7 +244,7 @@ semver = "1.0.28"
 # Mainly used for the musl builds, since the default musl malloc is very slow
 mimalloc = { version = "0.1.52", optional = true, default-features = false, features = ["secure"] }
 
-which = "8.0.2"
+which = "8.0.5"
 
 # Argon2 library with support for the PHC format
 argon2 = "0.5.3"
@@ -256,17 +259,17 @@ grass_compiler = { version = "0.13.4", default-features = false }
 opendal = { version = "0.57.0", default-features = false, features = ["services-fs"] }
 
 # For retrieving AWS credentials, including temporary SSO credentials
-aws-config = { version = "1.8.18", optional = true, default-features = false, features = [
+aws-config = { version = "1.10.0", optional = true, default-features = false, features = [
     "behavior-version-latest",
     "credentials-process",
     "rt-tokio",
     "sso",
 ] }
-aws-credential-types = { version = "1.2.14", optional = true }
+aws-credential-types = { version = "1.3.0", optional = true }
-aws-smithy-runtime-api = { version = "1.12.3", optional = true }
+aws-smithy-runtime-api = { version = "1.14.0", optional = true }
-http = { version = "1.4.1", optional = true }
+http = { version = "1.4.2", optional = true }
-reqsign-aws-v4 = { version = "3.0.1", optional = true }
+reqsign-aws-v4 = { version = "3.0.2", optional = true }
-reqsign-core = { version = "3.0.1", optional = true }
+reqsign-core = { version = "3.1.0", optional = true }
 
 # Strip debuginfo from the release builds
 # The debug symbols are to provide better panic traces

docker/DockerSettings.yaml

@@ -1,13 +1,13 @@
 ---
-vault_version: "v2026.4.1"
+vault_version: "v2026.6.4"
-vault_image_digest: "sha256:ca2a4251c4e63c9ad428262b4dd452789a1b9f6fce71da351e93dceed0d2edbe"
+vault_image_digest: "sha256:e7d3b31ec6a991a6bf447721ea341b4192ce5d3b920929211672fd4f3f891427"
 # Cross Compile Docker Helper Scripts v1.9.0
 # We use the linux/amd64 platform shell scripts since there is no difference between the different platform scripts
 # https://github.com/tonistiigi/xx | https://hub.docker.com/r/tonistiigi/xx/tags
 xx_image_digest: "sha256:c64defb9ed5a91eacb37f96ccc3d4cd72521c4bd18d5442905b95e2226b0e707"
-rust_version: 1.96.0 # Rust version to be used
+rust_version: 1.97.1 # Rust version to be used
 debian_version: trixie # Debian release name to be used
-alpine_version: "3.23" # Alpine version to be used
+alpine_version: "3.24" # Alpine version to be used
 # For which platforms/architectures will we try to build images
 platforms: ["linux/amd64", "linux/arm64", "linux/arm/v7", "linux/arm/v6"]
 # Determine the build images per OS/Arch

docker/Dockerfile.alpine

@@ -19,23 +19,23 @@
 # - From https://hub.docker.com/r/vaultwarden/web-vault/tags,
 #   click the tag name to view the digest of the image it currently points to.
 # - From the command line:
-#     $ docker pull docker.io/vaultwarden/web-vault:v2026.4.1
+#     $ docker pull docker.io/vaultwarden/web-vault:v2026.6.4
-#     $ docker image inspect --format "{{.RepoDigests}}" docker.io/vaultwarden/web-vault:v2026.4.1
+#     $ docker image inspect --format "{{.RepoDigests}}" docker.io/vaultwarden/web-vault:v2026.6.4
-#     [docker.io/vaultwarden/web-vault@sha256:ca2a4251c4e63c9ad428262b4dd452789a1b9f6fce71da351e93dceed0d2edbe]
+#     [docker.io/vaultwarden/web-vault@sha256:e7d3b31ec6a991a6bf447721ea341b4192ce5d3b920929211672fd4f3f891427]
 #
 # - Conversely, to get the tag name from the digest:
-#     $ docker image inspect --format "{{.RepoTags}}" docker.io/vaultwarden/web-vault@sha256:ca2a4251c4e63c9ad428262b4dd452789a1b9f6fce71da351e93dceed0d2edbe
+#     $ docker image inspect --format "{{.RepoTags}}" docker.io/vaultwarden/web-vault@sha256:e7d3b31ec6a991a6bf447721ea341b4192ce5d3b920929211672fd4f3f891427
-#     [docker.io/vaultwarden/web-vault:v2026.4.1]
+#     [docker.io/vaultwarden/web-vault:v2026.6.4]
 #
-FROM --platform=linux/amd64 docker.io/vaultwarden/web-vault@sha256:ca2a4251c4e63c9ad428262b4dd452789a1b9f6fce71da351e93dceed0d2edbe AS vault
+FROM --platform=linux/amd64 docker.io/vaultwarden/web-vault@sha256:e7d3b31ec6a991a6bf447721ea341b4192ce5d3b920929211672fd4f3f891427 AS vault
 
 ########################## ALPINE BUILD IMAGES ##########################
 ## NOTE: The Alpine Base Images do not support other platforms then linux/amd64 and linux/arm64
 ## And for Alpine we define all build images here, they will only be loaded when actually used
-FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:x86_64-musl-stable-1.96.0 AS build_amd64
+FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:x86_64-musl-stable-1.97.1 AS build_amd64
-FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:aarch64-musl-stable-1.96.0 AS build_arm64
+FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:aarch64-musl-stable-1.97.1 AS build_arm64
-FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:armv7-musleabihf-stable-1.96.0 AS build_armv7
+FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:armv7-musleabihf-stable-1.97.1 AS build_armv7
-FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:arm-musleabi-stable-1.96.0 AS build_armv6
+FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:arm-musleabi-stable-1.97.1 AS build_armv6
 
 ########################## BUILD IMAGE ##########################
 # hadolint ignore=DL3006
@@ -66,7 +66,7 @@ RUN USER=root cargo new --bin /app
 WORKDIR /app
 
 # Environment variables for Cargo on Alpine based builds
-RUN echo "export CARGO_TARGET=${RUST_MUSL_CROSS_TARGET}" >> /env-cargo && \
+RUN echo "export CARGO_TARGET=${CARGO_BUILD_TARGET}" >> /env-cargo && \
     # Output the current contents of the file
     cat /env-cargo
 
@@ -126,7 +126,7 @@ RUN source /env-cargo && \
 # To uninstall: docker run --privileged --rm tonistiigi/binfmt --uninstall 'qemu-*'
 #
 # We need to add `--platform` here, because of a podman bug: https://github.com/containers/buildah/issues/4742
-FROM --platform=$TARGETPLATFORM docker.io/library/alpine:3.23
+FROM --platform=$TARGETPLATFORM docker.io/library/alpine:3.24
 
 ENV ROCKET_PROFILE="release" \
     ROCKET_ADDRESS=0.0.0.0 \

docker/Dockerfile.debian

@@ -19,15 +19,15 @@
 # - From https://hub.docker.com/r/vaultwarden/web-vault/tags,
 #   click the tag name to view the digest of the image it currently points to.
 # - From the command line:
-#     $ docker pull docker.io/vaultwarden/web-vault:v2026.4.1
+#     $ docker pull docker.io/vaultwarden/web-vault:v2026.6.4
-#     $ docker image inspect --format "{{.RepoDigests}}" docker.io/vaultwarden/web-vault:v2026.4.1
+#     $ docker image inspect --format "{{.RepoDigests}}" docker.io/vaultwarden/web-vault:v2026.6.4
-#     [docker.io/vaultwarden/web-vault@sha256:ca2a4251c4e63c9ad428262b4dd452789a1b9f6fce71da351e93dceed0d2edbe]
+#     [docker.io/vaultwarden/web-vault@sha256:e7d3b31ec6a991a6bf447721ea341b4192ce5d3b920929211672fd4f3f891427]
 #
 # - Conversely, to get the tag name from the digest:
-#     $ docker image inspect --format "{{.RepoTags}}" docker.io/vaultwarden/web-vault@sha256:ca2a4251c4e63c9ad428262b4dd452789a1b9f6fce71da351e93dceed0d2edbe
+#     $ docker image inspect --format "{{.RepoTags}}" docker.io/vaultwarden/web-vault@sha256:e7d3b31ec6a991a6bf447721ea341b4192ce5d3b920929211672fd4f3f891427
-#     [docker.io/vaultwarden/web-vault:v2026.4.1]
+#     [docker.io/vaultwarden/web-vault:v2026.6.4]
 #
-FROM --platform=linux/amd64 docker.io/vaultwarden/web-vault@sha256:ca2a4251c4e63c9ad428262b4dd452789a1b9f6fce71da351e93dceed0d2edbe AS vault
+FROM --platform=linux/amd64 docker.io/vaultwarden/web-vault@sha256:e7d3b31ec6a991a6bf447721ea341b4192ce5d3b920929211672fd4f3f891427 AS vault
 
 ########################## Cross Compile Docker Helper Scripts ##########################
 ## We use the linux/amd64 no matter which Build Platform, since these are all bash scripts
@@ -36,7 +36,7 @@ FROM --platform=linux/amd64 docker.io/tonistiigi/xx@sha256:c64defb9ed5a91eacb37f
 
 ########################## BUILD IMAGE ##########################
 # hadolint ignore=DL3006
-FROM --platform=$BUILDPLATFORM docker.io/library/rust:1.96.0-slim-trixie AS build
+FROM --platform=$BUILDPLATFORM docker.io/library/rust:1.97.1-slim-trixie AS build
 COPY --from=xx / /
 ARG TARGETARCH
 ARG TARGETVARIANT

docker/Dockerfile.j2

@@ -106,7 +106,7 @@ WORKDIR /app
 
 {% if base == "alpine" %}
 # Environment variables for Cargo on Alpine based builds
-RUN echo "export CARGO_TARGET=${RUST_MUSL_CROSS_TARGET}" >> /env-cargo && \
+RUN echo "export CARGO_TARGET=${CARGO_BUILD_TARGET}" >> /env-cargo && \
     # Output the current contents of the file
     cat /env-cargo
 

macros/Cargo.toml

@@ -13,8 +13,8 @@ path = "src/lib.rs"
 proc-macro = true
 
 [dependencies]
-quote = "1.0.45"
+quote = "1.0.47"
-syn = "2.0.117"
+syn = "3.0.3"
 
 [lints]
 workspace = true

migrations/mysql/2026-08-01-120000_user_crypto_v2/down.sql

@@ -0,0 +1,6 @@
+DROP TABLE IF EXISTS user_signature_key_pairs;
+
+ALTER TABLE users DROP COLUMN signed_public_key;
+ALTER TABLE users DROP COLUMN security_state;
+ALTER TABLE users DROP COLUMN security_version;
+ALTER TABLE users DROP COLUMN v2_upgrade_token;

migrations/mysql/2026-08-01-120000_user_crypto_v2/up.sql

@@ -0,0 +1,17 @@
+ALTER TABLE users ADD COLUMN signed_public_key TEXT;
+ALTER TABLE users ADD COLUMN security_state TEXT;
+ALTER TABLE users ADD COLUMN security_version INTEGER;
+ALTER TABLE users ADD COLUMN v2_upgrade_token TEXT;
+
+DROP TABLE IF EXISTS user_signature_key_pairs;
+
+CREATE TABLE user_signature_key_pairs (
+    uuid                CHAR(36) NOT NULL PRIMARY KEY,
+    user_uuid           CHAR(36) NOT NULL UNIQUE,
+    signature_algorithm INTEGER  NOT NULL, -- 0 = ed25519, 1 = mldsa44
+    signing_key         TEXT     NOT NULL,
+    verifying_key       TEXT     NOT NULL,
+    created_at          DATETIME NOT NULL,
+    updated_at          DATETIME NOT NULL,
+    FOREIGN KEY (user_uuid) REFERENCES users (uuid) ON DELETE CASCADE
+);

migrations/postgresql/2026-08-01-120000_user_crypto_v2/down.sql

@@ -0,0 +1,6 @@
+DROP TABLE IF EXISTS user_signature_key_pairs;
+
+ALTER TABLE users DROP COLUMN signed_public_key;
+ALTER TABLE users DROP COLUMN security_state;
+ALTER TABLE users DROP COLUMN security_version;
+ALTER TABLE users DROP COLUMN v2_upgrade_token;

migrations/postgresql/2026-08-01-120000_user_crypto_v2/up.sql

@@ -0,0 +1,16 @@
+ALTER TABLE users ADD COLUMN signed_public_key TEXT;
+ALTER TABLE users ADD COLUMN security_state TEXT;
+ALTER TABLE users ADD COLUMN security_version INTEGER;
+ALTER TABLE users ADD COLUMN v2_upgrade_token TEXT;
+
+DROP TABLE IF EXISTS user_signature_key_pairs;
+
+CREATE TABLE user_signature_key_pairs (
+    uuid                CHAR(36) NOT NULL PRIMARY KEY,
+    user_uuid           CHAR(36) NOT NULL UNIQUE REFERENCES users (uuid) ON DELETE CASCADE,
+    signature_algorithm INTEGER  NOT NULL, -- 0 = ed25519, 1 = mldsa44
+    signing_key         TEXT     NOT NULL,
+    verifying_key       TEXT     NOT NULL,
+    created_at          TIMESTAMP NOT NULL,
+    updated_at          TIMESTAMP NOT NULL
+);

migrations/sqlite/2026-08-01-120000_user_crypto_v2/down.sql

@@ -0,0 +1,6 @@
+DROP TABLE IF EXISTS user_signature_key_pairs;
+
+ALTER TABLE users DROP COLUMN signed_public_key;
+ALTER TABLE users DROP COLUMN security_state;
+ALTER TABLE users DROP COLUMN security_version;
+ALTER TABLE users DROP COLUMN v2_upgrade_token;

migrations/sqlite/2026-08-01-120000_user_crypto_v2/up.sql

@@ -0,0 +1,16 @@
+ALTER TABLE users ADD COLUMN signed_public_key TEXT;
+ALTER TABLE users ADD COLUMN security_state TEXT;
+ALTER TABLE users ADD COLUMN security_version INTEGER;
+ALTER TABLE users ADD COLUMN v2_upgrade_token TEXT;
+
+DROP TABLE IF EXISTS user_signature_key_pairs;
+
+CREATE TABLE user_signature_key_pairs (
+    uuid                TEXT     NOT NULL PRIMARY KEY,
+    user_uuid           TEXT     NOT NULL UNIQUE REFERENCES users (uuid) ON DELETE CASCADE,
+    signature_algorithm INTEGER  NOT NULL, -- 0 = ed25519, 1 = mldsa44
+    signing_key         TEXT     NOT NULL,
+    verifying_key       TEXT     NOT NULL,
+    created_at          DATETIME NOT NULL,
+    updated_at          DATETIME NOT NULL
+);

rust-toolchain.toml

@@ -1,4 +1,4 @@
 [toolchain]
-channel = "1.96.0"
+channel = "1.97.1"
 components = [ "rustfmt", "clippy" ]
 profile = "minimal"

src/api/core/accounts.rs

@@ -15,14 +15,15 @@ use crate::{
         core::{accept_org_invite, log_user_event, two_factor::email},
         master_password_policy, register_push_device, unregister_push_device,
     },
-    auth::{ClientHeaders, Headers, decode_delete, decode_invite, decode_verify_email},
+    auth::{ClientHeaders, ClientIp, Headers, decode_delete, decode_invite, decode_verify_email},
     crypto,
     db::{
         DbConn, DbPool,
         models::{
             AuthRequest, AuthRequestId, Cipher, CipherId, Device, DeviceId, DeviceType, DeviceWithAuthRequest,
             EmergencyAccess, EmergencyAccessId, EventType, Folder, FolderId, Invitation, Membership, MembershipId,
-            OrgPolicy, OrgPolicyType, Organization, OrganizationId, Send, SendId, User, UserId, UserKdfType,
+            OrgPolicy, OrgPolicyType, Organization, OrganizationId, Send, SendId, SignatureAlgorithm, User, UserId,
+            UserKdfType, UserSignatureKeyPair,
         },
     },
     mail,
@@ -41,6 +42,8 @@ pub fn routes() -> Vec<rocket::Route> {
         post_profile,
         put_avatar,
         get_public_keys,
+        get_account_public_keys,
+        get_keys,
         post_keys,
         post_password,
         post_set_password,
@@ -102,6 +105,9 @@ pub struct RegisterData {
     #[serde(alias = "userAsymmetricKeys")]
     keys: Option<KeysData>,
 
+    // Supersedes `keys`, and the only way a v2 account can be registered.
+    account_keys: Option<AccountKeysData>,
+
     master_password_hint: Option<String>,
 
     name: Option<String>,
@@ -116,36 +122,6 @@ pub struct RegisterData {
     org_invite_token: Option<String>,
 }
 
-impl RegisterData {
-    fn hash(&self) -> String {
-        self.compat.fold(|rdc| &rdc.master_password_hash, |rdcu| &rdcu.master_password_authentication.hash).to_owned()
-    }
-
-    fn kdf(&self) -> &KDFData {
-        self.compat.fold(|rdc| &rdc.kdf, |rdcu| &rdcu.master_password_authentication.kdf)
-    }
-
-    fn key(&self) -> String {
-        self.compat.fold(|rdc| &rdc.key, |rdcu| &rdcu.master_password_unlock.key).to_owned()
-    }
-
-    // When comparing with salt, email need to be normalized:
-    //  - https://github.com/bitwarden/clients/blob/web-v2026.5.0/libs/common/src/key-management/master-password/services/master-password.service.ts#L171
-    fn unprocessable(&self) -> bool {
-        let mut unprocessable = false;
-        *self.compat.fold(
-            |_| &false,
-            |rdcu| {
-                let email = self.email.trim().to_lowercase();
-                unprocessable = rdcu.master_password_authentication.kdf != rdcu.master_password_unlock.kdf
-                    || rdcu.master_password_authentication.salt != email
-                    || rdcu.master_password_unlock.salt != email;
-                &unprocessable
-            },
-        )
-    }
-}
-
 #[derive(Debug, Deserialize)]
 struct RegisterDataOld {
     #[serde(flatten)]
@@ -183,6 +159,34 @@ impl RegisterDataCompat {
             RegisterDataCompat::RegisterDataCur(rdcu) => fcu(rdcu),
         }
     }
+
+    fn hash(&self) -> String {
+        self.fold(|rdc| &rdc.master_password_hash, |rdcu| &rdcu.master_password_authentication.hash).to_owned()
+    }
+
+    fn kdf(&self) -> &KDFData {
+        self.fold(|rdc| &rdc.kdf, |rdcu| &rdcu.master_password_authentication.kdf)
+    }
+
+    fn key(&self) -> String {
+        self.fold(|rdc| &rdc.key, |rdcu| &rdcu.master_password_unlock.key).to_owned()
+    }
+
+    // When comparing with salt, email need to be normalized:
+    //  - https://github.com/bitwarden/clients/blob/web-v2026.5.0/libs/common/src/key-management/master-password/services/master-password.service.ts#L171
+    fn unprocessable(&self, email: &str) -> bool {
+        let mut unprocessable = false;
+        *self.fold(
+            |_| &false,
+            |rdcu| {
+                let email = email.trim().to_lowercase();
+                unprocessable = rdcu.master_password_authentication.kdf != rdcu.master_password_unlock.kdf
+                    || rdcu.master_password_authentication.salt != email
+                    || rdcu.master_password_unlock.salt != email;
+                &unprocessable
+            },
+        )
+    }
 }
 
 #[derive(Debug, Deserialize)]
@@ -192,6 +196,167 @@ struct KeysData {
     public_key: String,
 }
 
+/// The `accountKeys` payload, which replaces the flat `keys`/`userAsymmetricKeys` object.
+///
+/// It carries either a "v1" state (just the encryption key pair) or a "v2" one, which adds a
+/// signature key pair, a signed public key, and a signed security state. The two deprecated
+/// top-level fields are still sent by the SDK alongside the nested ones and are only used as a
+/// fallback for clients that don't send `publicKeyEncryptionKeyPair` yet.
+///
+/// Ref: <https://github.com/bitwarden/server/blob/main/src/Core/KeyManagement/Models/Api/Request/AccountKeysRequestModel.cs>
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct AccountKeysData {
+    user_key_encrypted_account_private_key: Option<String>,
+    account_public_key: Option<String>,
+
+    public_key_encryption_key_pair: Option<PublicKeyEncryptionKeyPairData>,
+    signature_key_pair: Option<SignatureKeyPairData>,
+    security_state: Option<SecurityStateData>,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+struct PublicKeyEncryptionKeyPairData {
+    wrapped_private_key: String,
+    public_key: String,
+    signed_public_key: Option<String>,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+struct SignatureKeyPairData {
+    signature_algorithm: String,
+    wrapped_signing_key: String,
+    verifying_key: String,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+struct SecurityStateData {
+    security_state: String,
+    security_version: i32,
+}
+
+pub struct ValidatedAccountKeys {
+    private_key: String,
+    public_key: String,
+    v2: Option<ValidatedV2AccountKeys>,
+}
+
+struct ValidatedV2AccountKeys {
+    signed_public_key: String,
+    signing_key: String,
+    verifying_key: String,
+    signature_algorithm: SignatureAlgorithm,
+    security_state: String,
+    security_version: i32,
+}
+
+impl AccountKeysData {
+    /// Checks that the payload describes a complete account cryptographic state.
+    ///
+    /// The v2 fields have to be all present or all absent: a client that receives a COSE-wrapped
+    /// private key without the matching signature key pair and security state refuses to unlock the
+    /// vault, so storing half a state would produce an account nobody can log into.
+    pub fn validate(self) -> ApiResult<ValidatedAccountKeys> {
+        let (private_key, public_key, signed_public_key) = if let Some(key_pair) = self.public_key_encryption_key_pair {
+            (key_pair.wrapped_private_key, key_pair.public_key, key_pair.signed_public_key)
+        // Older clients only send the deprecated top-level fields, which are always v1.
+        } else if let (Some(private_key), Some(public_key)) =
+            (self.user_key_encrypted_account_private_key, self.account_public_key)
+        {
+            (private_key, public_key, None)
+        } else {
+            err!("The account keys are missing an encryption key pair")
+        };
+
+        let v2 = match (signed_public_key, self.signature_key_pair, self.security_state) {
+            (Some(signed_public_key), Some(signature_key_pair), Some(security_state)) => {
+                let Some(signature_algorithm) = SignatureAlgorithm::from_str(&signature_key_pair.signature_algorithm)
+                else {
+                    err!(format!("Unsupported signature algorithm: {}", signature_key_pair.signature_algorithm))
+                };
+
+                Some(ValidatedV2AccountKeys {
+                    signed_public_key,
+                    signing_key: signature_key_pair.wrapped_signing_key,
+                    verifying_key: signature_key_pair.verifying_key,
+                    signature_algorithm,
+                    security_state: security_state.security_state,
+                    security_version: security_state.security_version,
+                })
+            }
+            (None, None, None) => None,
+            _ => err!(
+                "Invalid account keys: the signed public key, signature key pair and security state must either all be present or all be absent"
+            ),
+        };
+
+        Ok(ValidatedAccountKeys {
+            private_key,
+            public_key,
+            v2,
+        })
+    }
+}
+
+impl From<KeysData> for ValidatedAccountKeys {
+    fn from(keys: KeysData) -> Self {
+        Self {
+            private_key: keys.encrypted_private_key,
+            public_key: keys.public_key,
+            v2: None,
+        }
+    }
+}
+
+impl ValidatedAccountKeys {
+    /// Writes the parts of the state that live on the user itself. The user still needs saving, and
+    /// [`Self::save_signature_key_pair`] still needs calling once it has been.
+    ///
+    /// Rejects downgrading an account from v2 back to v1.
+    pub fn apply(&self, user: &mut User) -> EmptyResult {
+        if user.is_v2() && self.v2.is_none() {
+            err!("Cannot downgrade an account from v2 to v1 encryption")
+        }
+
+        user.private_key = Some(self.private_key.clone());
+        user.public_key = Some(self.public_key.clone());
+
+        user.signed_public_key = self.v2.as_ref().map(|v2| v2.signed_public_key.clone());
+        user.security_state = self.v2.as_ref().map(|v2| v2.security_state.clone());
+        user.security_version = self.v2.as_ref().map(|v2| v2.security_version);
+
+        Ok(())
+    }
+
+    /// Persists the signature key pair. Separate from [`Self::apply`] because the row has a foreign
+    /// key to the user, so it can only be written once the user exists.
+    pub async fn save_signature_key_pair(&self, user_id: &UserId, conn: &DbConn) -> EmptyResult {
+        // Skip if the account is v1, since v1 accounts don't have a signature key pair.
+        let Some(v2) = &self.v2 else {
+            return Ok(());
+        };
+
+        let mut key_pair = match UserSignatureKeyPair::find_active_by_user(user_id, conn).await {
+            Some(mut key_pair) => {
+                key_pair.signature_algorithm = v2.signature_algorithm as i32;
+                key_pair.signing_key.clone_from(&v2.signing_key);
+                key_pair.verifying_key.clone_from(&v2.verifying_key);
+                key_pair
+            }
+            None => UserSignatureKeyPair::new(
+                user_id.clone(),
+                v2.signature_algorithm,
+                v2.signing_key.clone(),
+                v2.verifying_key.clone(),
+            ),
+        };
+        key_pair.save(conn).await
+    }
+}
+
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct MasterPasswordAuthentication {
@@ -216,11 +381,12 @@ pub struct MasterPasswordUnlock {
 #[serde(rename_all = "camelCase")]
 pub struct SetPasswordData {
     #[serde(flatten)]
-    kdf: KDFData,
+    compat: RegisterDataCompat,
 
-    key: String,
     keys: Option<KeysData>,
-    master_password_hash: String,
+    // Supersedes `keys`, and the only way a v2 account can be initialized here.
+    account_keys: Option<AccountKeysData>,
+
     master_password_hint: Option<String>,
     org_identifier: Option<String>,
 }
@@ -263,7 +429,7 @@ pub async fn register(data: Json<RegisterData>, email_verification: bool, conn:
 
     let mut pending_emergency_access = None;
 
-    if data.unprocessable() {
+    if data.compat.unprocessable(&data.email) {
         err_code!("Unexpected RegisterData format", Status::UnprocessableEntity.code);
     }
 
@@ -386,9 +552,9 @@ pub async fn register(data: Json<RegisterData>, email_verification: bool, conn:
     // Make sure we don't leave a lingering invitation.
     Invitation::take(&email, &conn).await;
 
-    set_kdf_data(&mut user, data.kdf())?;
+    set_kdf_data(&mut user, data.compat.kdf())?;
 
-    user.set_password(&data.hash(), Some(data.key()), true, None, &conn).await?;
+    user.set_password(&data.compat.hash(), Some(data.compat.key()), true, None, &conn).await?;
     user.password_hint = password_hint;
 
     // Add extra fields if present
@@ -396,9 +562,13 @@ pub async fn register(data: Json<RegisterData>, email_verification: bool, conn:
         user.name = name;
     }
 
-    if let Some(keys) = data.keys {
+    let account_keys = match (data.account_keys, data.keys) {
-        user.private_key = Some(keys.encrypted_private_key);
+        (Some(account_keys), _) => Some(account_keys.validate()?),
-        user.public_key = Some(keys.public_key);
+        (None, Some(keys)) => Some(keys.into()),
+        (None, None) => None,
+    };
+    if let Some(ref account_keys) = account_keys {
+        account_keys.apply(&mut user)?;
     }
 
     if email_verified {
@@ -422,6 +592,10 @@ pub async fn register(data: Json<RegisterData>, email_verification: bool, conn:
 
     user.save(&conn).await?;
 
+    if let Some(account_keys) = account_keys {
+        account_keys.save_signature_key_pair(&user.uuid, &conn).await?;
+    }
+
     // accept any open emergency access invitations
     if !CONFIG.mail_enabled() && CONFIG.emergency_access_allowed() {
         for mut emergency_invite in EmergencyAccess::find_all_invited_by_grantee_email(&user.email, &conn).await {
@@ -444,16 +618,26 @@ async fn post_set_password(data: Json<SetPasswordData>, headers: Headers, conn:
         err!("Account already initialized, cannot set password")
     }
 
+    if data.compat.unprocessable(&user.email) {
+        err_code!("Unexpected SetPasswordData format", Status::UnprocessableEntity.code);
+    }
+
     // Check against the password hint setting here so if it fails,
     // the user can retry without losing their invitation below.
     let password_hint = clean_password_hint(data.master_password_hint.as_ref());
     enforce_password_hint_setting(password_hint.as_ref())?;
 
-    set_kdf_data(&mut user, &data.kdf)?;
+    let account_keys = match (data.account_keys, data.keys) {
+        (Some(account_keys), _) => Some(account_keys.validate()?),
+        (None, Some(keys)) => Some(keys.into()),
+        (None, None) => None,
+    };
+
+    set_kdf_data(&mut user, data.compat.kdf())?;
 
     user.set_password(
-        &data.master_password_hash,
+        &data.compat.hash(),
-        Some(data.key),
+        Some(data.compat.key()),
         false,
         Some(vec![String::from("revision_date")]), // We need to allow revision-date to use the old security_timestamp
         &conn,
@@ -461,9 +645,8 @@ async fn post_set_password(data: Json<SetPasswordData>, headers: Headers, conn:
     .await?;
     user.password_hint = password_hint;
 
-    if let Some(keys) = data.keys {
+    if let Some(ref account_keys) = account_keys {
-        user.private_key = Some(keys.encrypted_private_key);
+        account_keys.apply(&mut user)?;
-        user.public_key = Some(keys.public_key);
     }
 
     if let Some(identifier) = data.org_identifier
@@ -492,6 +675,10 @@ async fn post_set_password(data: Json<SetPasswordData>, headers: Headers, conn:
 
     user.save(&conn).await?;
 
+    if let Some(account_keys) = account_keys {
+        account_keys.save_signature_key_pair(&user.uuid, &conn).await?;
+    }
+
     Ok(Json(json!({
       "object": "set-password",
       "captchaBypassToken": "",
@@ -573,20 +760,60 @@ async fn get_public_keys(user_id: UserId, _headers: Headers, conn: DbConn) -> Js
     })))
 }
 
+#[get("/users/<user_id>/keys")]
+async fn get_account_public_keys(user_id: UserId, _headers: Headers, conn: DbConn) -> JsonResult {
+    let user = match User::find_by_uuid(&user_id, &conn).await {
+        Some(user) if user.public_key.is_some() => user,
+        Some(_) => err_code!("User has no public_key", Status::NotFound.code),
+        None => err_code!("User doesn't exist", Status::NotFound.code),
+    };
+
+    Ok(Json(user.public_keys_json(&conn).await))
+}
+
+#[get("/accounts/keys")]
+async fn get_keys(headers: Headers, conn: DbConn) -> JsonResult {
+    let user = headers.user;
+
+    Ok(Json(json!({
+        "key": user.akey,
+        "privateKey": user.private_key,
+        "publicKey": user.public_key,
+        "accountKeys": user.account_keys_json(&conn).await,
+        "object": "keys"
+    })))
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+struct PostKeysData {
+    #[serde(flatten)]
+    keys: Option<KeysData>,
+    account_keys: Option<AccountKeysData>,
+}
+
 #[post("/accounts/keys", data = "<data>")]
-async fn post_keys(data: Json<KeysData>, headers: Headers, conn: DbConn) -> JsonResult {
+async fn post_keys(data: Json<PostKeysData>, headers: Headers, conn: DbConn) -> JsonResult {
-    let data: KeysData = data.into_inner();
+    let data: PostKeysData = data.into_inner();
 
     let mut user = headers.user;
 
-    user.private_key = Some(data.encrypted_private_key);
+    // `accountKeys` supersedes the flat `keys` object when both are sent.
-    user.public_key = Some(data.public_key);
+    let account_keys = match (data.account_keys, data.keys) {
+        (Some(account_keys), _) => account_keys.validate()?,
+        (None, Some(keys)) => keys.into(),
+        (None, None) => err!("No account keys provided"),
+    };
 
+    account_keys.apply(&mut user)?;
     user.save(&conn).await?;
+    account_keys.save_signature_key_pair(&user.uuid, &conn).await?;
 
     Ok(Json(json!({
+        "key": user.akey,
         "privateKey": user.private_key,
         "publicKey": user.public_key,
+        "accountKeys": user.account_keys_json(&conn).await,
         "object":"keys"
     })))
 }
@@ -693,10 +920,6 @@ struct UnlockData {
 #[derive(Deserialize)]
 #[serde(rename_all = "camelCase")]
 struct ChangeKdfData {
-    #[allow(dead_code)]
-    new_master_password_hash: String,
-    #[allow(dead_code)]
-    key: String,
     authentication_data: AuthenticationData,
     unlock_data: UnlockData,
     master_password_hash: String,
@@ -1197,7 +1420,9 @@ struct DeleteRecoverData {
 }
 
 #[post("/accounts/delete-recover", data = "<data>")]
-async fn post_delete_recover(data: Json<DeleteRecoverData>, conn: DbConn) -> EmptyResult {
+async fn post_delete_recover(data: Json<DeleteRecoverData>, ip: ClientIp, conn: DbConn) -> EmptyResult {
+    crate::ratelimit::check_limit_unauthenticated(&ip.ip)?;
+
     let data: DeleteRecoverData = data.into_inner();
 
     if CONFIG.mail_enabled() {
@@ -1270,9 +1495,11 @@ struct PasswordHintData {
 }
 
 #[post("/accounts/password-hint", data = "<data>")]
-async fn password_hint(data: Json<PasswordHintData>, conn: DbConn) -> EmptyResult {
+async fn password_hint(data: Json<PasswordHintData>, ip: ClientIp, conn: DbConn) -> EmptyResult {
     const NO_HINT: &str = "Sorry, you have no password hint...";
 
+    crate::ratelimit::check_limit_unauthenticated(&ip.ip)?;
+
     if !CONFIG.password_hints_allowed() || (!CONFIG.mail_enabled() && !CONFIG.show_password_hint()) {
         err!("This server is not configured to provide password hints.");
     }
@@ -1334,6 +1561,13 @@ pub async fn prelogin(data: Json<PreloginData>, conn: DbConn) -> Json<Value> {
         "kdfIterations": kdf_iter,
         "kdfMemory": kdf_mem,
         "kdfParallelism": kdf_para,
+        "kdfSettings": {
+            "iterations": kdf_iter,
+            "kdfType": kdf_type,
+            "memory": kdf_mem,
+            "parallelism": kdf_para
+        },
+        "salt": null,
     }))
 }
 
@@ -1510,7 +1744,9 @@ async fn put_device_token(device_id: DeviceId, data: Json<PushToken>, headers: H
 }
 
 #[put("/devices/identifier/<device_id>/clear-token")]
-async fn put_clear_device_token(device_id: DeviceId, conn: DbConn) -> EmptyResult {
+async fn put_clear_device_token(device_id: DeviceId, ip: ClientIp, conn: DbConn) -> EmptyResult {
+    crate::ratelimit::check_limit_unauthenticated(&ip.ip)?;
+
     // This only clears push token
     // https://github.com/bitwarden/server/blob/9ebe16587175b1c0e9208f84397bb75d0d595510/src/Api/Controllers/DevicesController.cs#L215
     // https://github.com/bitwarden/server/blob/9ebe16587175b1c0e9208f84397bb75d0d595510/src/Core/Services/Implementations/DeviceService.cs#L37
@@ -1532,8 +1768,8 @@ async fn put_clear_device_token(device_id: DeviceId, conn: DbConn) -> EmptyResul
 
 // On upstream server, both PUT and POST are declared. Implementing the POST method in case it would be useful somewhere
 #[post("/devices/identifier/<device_id>/clear-token")]
-async fn post_clear_device_token(device_id: DeviceId, conn: DbConn) -> EmptyResult {
+async fn post_clear_device_token(device_id: DeviceId, ip: ClientIp, conn: DbConn) -> EmptyResult {
-    put_clear_device_token(device_id, conn).await
+    put_clear_device_token(device_id, ip, conn).await
 }
 
 #[get("/tasks")]

src/api/core/ciphers.rs

@@ -198,6 +198,7 @@ async fn sync(data: SyncData, headers: Headers, client_version: Option<ClientVer
         "sends": sends_json,
         "userDecryption": {
             "masterPasswordUnlock": master_password_unlock,
+            "v2UpgradeToken": headers.user.v2_upgrade_token_json(),
         },
         "object": "sync"
     })))
@@ -450,7 +451,9 @@ pub async fn update_cipher_from_data(
         match Membership::find_confirmed_by_user_and_org(&headers.user.uuid, &org_id, conn).await {
             None => err!("You don't have permission to add item to organization"),
             Some(member) => {
-                if shared_to_collections.is_some()
+                // A non-empty list of collections implies the caller already validated the user's write
+                // access to them, so we can move the cipher into the organization on that basis.
+                if shared_to_collections.as_ref().is_some_and(|cols| !cols.is_empty())
                     || member.has_full_access()
                     || cipher.is_write_accessible_to_user(&headers.user.uuid, conn).await
                 {
@@ -629,7 +632,7 @@ async fn post_ciphers_import(data: Json<ImportData>, headers: Headers, conn: DbC
 
     // Read and create the ciphers
     for (index, mut cipher_data) in data.ciphers.into_iter().enumerate() {
-        let folder_id = relations_map.get(&index).map(|i| folders[*i].clone());
+        let folder_id = relations_map.get(&index).and_then(|i| folders.get(*i).cloned());
         cipher_data.folder_id = folder_id;
 
         let mut cipher = Cipher::new(cipher_data.r#type, cipher_data.name.clone());
@@ -1043,6 +1046,13 @@ async fn share_cipher_by_uuid(
         err!("Cipher doesn't exist")
     };
 
+    // `update_cipher_from_data()` rejects this too, but only after the collections below were
+    // already linked. There are no transactions, so that would leave the cipher linked to a
+    // collection of another organization.
+    if cipher.organization_uuid.is_some() && cipher.organization_uuid != data.cipher.organization_id {
+        err!("Organization mismatch. Please resync the client before updating the cipher")
+    }
+
     let mut shared_to_collections = vec![];
 
     if let Some(organization_id) = &data.cipher.organization_id {
@@ -2135,9 +2145,9 @@ impl CipherSyncData {
             // Organization Sync does not support Folders, Favorites, or Archives.
             // If these are set, it will cause issues in the web-vault.
             CipherSyncType::Organization => {
-                cipher_folders = HashMap::with_capacity(0);
+                cipher_folders = HashMap::new();
-                cipher_favorites = HashSet::with_capacity(0);
+                cipher_favorites = HashSet::new();
-                cipher_archives = HashMap::with_capacity(0);
+                cipher_archives = HashMap::new();
             }
         }
 

src/api/core/events.rs

@@ -52,7 +52,7 @@ async fn get_org_events(org_id: OrganizationId, data: EventRange, headers: Admin
             .map(Event::to_json)
             .collect()
     } else {
-        Vec::with_capacity(0)
+        Vec::new()
     };
 
     Ok(Json(json!({
@@ -78,7 +78,7 @@ async fn get_cipher_events(cipher_id: CipherId, data: EventRange, headers: Heade
 
         Event::find_by_cipher_uuid(&cipher_id, &start_date, &end_date, &conn).await.iter().map(Event::to_json).collect()
     } else {
-        Vec::with_capacity(0)
+        Vec::new()
     };
 
     Ok(Json(json!({
@@ -115,7 +115,7 @@ async fn get_user_events(
             .map(Event::to_json)
             .collect()
     } else {
-        Vec::with_capacity(0)
+        Vec::new()
     };
 
     Ok(Json(json!({
@@ -182,7 +182,10 @@ async fn post_events_collect(data: Json<Vec<EventCollection>>, headers: Headers,
                 .await;
             }
             1600..=1699 => {
-                if let Some(org_id) = &event.organization_id {
+                // Only allow logging events for an organization the user is actually a member of.
+                if let Some(org_id) = &event.organization_id
+                    && Membership::find_confirmed_by_user_and_org(&headers.user.uuid, org_id, &conn).await.is_some()
+                {
                     log_event_impl(
                         event.r#type,
                         org_id,
@@ -197,8 +200,11 @@ async fn post_events_collect(data: Json<Vec<EventCollection>>, headers: Headers,
                 }
             }
             _ => {
+                // The cipher determines the organization the event is logged to, so make sure the
+                // user can actually access it instead of trusting the provided cipher uuid.
                 if let Some(cipher_uuid) = &event.cipher_id
                     && let Some(cipher) = Cipher::find_by_uuid(cipher_uuid, &conn).await
+                    && cipher.is_accessible_to_user(&headers.user.uuid, &conn).await
                     && let Some(org_id) = cipher.organization_uuid
                 {
                     log_event_impl(

src/api/core/mod.rs

@@ -228,14 +228,17 @@ fn config() -> Json<Value> {
         // Version history:
         // - Individual cipher key encryption: 2024.2.0
         // - Mobile app support for MasterPasswordUnlockData: 2025.8.0
-        "version": "2025.12.0",
+        "version": "2026.6.0",
         "gitHash": option_env!("GIT_REV"),
         "server": {
           "name": "Vaultwarden",
           "url": "https://github.com/dani-garcia/vaultwarden"
         },
         "settings": {
-            "disableUserRegistration": CONFIG.is_signup_disabled()
+            "disableUserRegistration": CONFIG.is_signup_disabled(),
+            // When enabled, this setting signals to clients that onboarding interstitials
+            // (post-login welcome dialogs, extension install prompts, setup extension redirects, and premium upsell modals) should be suppressed
+            "suppressOnboardingInterstitials": false
         },
         "environment": {
           "vault": domain,
@@ -251,6 +254,10 @@ fn config() -> Json<Value> {
           "vapidPublicKey": null
         },
         "featureStates": feature_states,
+        // Not supported right now
+        // Used for by clients to learn if the server requires extra work to establish a connection.
+        // See: https://github.com/bitwarden/server/pull/6892 | https://github.com/bitwarden/server/commit/52955d1860b4dfb905f67bbe39d9b10bbd61ded0
+        "communication": null,
         "object": "config",
     }))
 }

src/api/core/organizations.rs

@@ -470,7 +470,7 @@ async fn get_org_collections_details(org_id: OrganizationId, headers: ManagerHea
                 .map(CollectionGroup::to_json_details_for_group)
                 .collect()
         } else {
-            Vec::with_capacity(0)
+            Vec::new()
         };
 
         let mut json_object = col.to_json_details(&headers.user.uuid, None, &conn).await;
@@ -577,6 +577,13 @@ async fn post_bulk_access_collections(
         err!("Can't find organization details")
     }
 
+    // The collections and members are checked below, the groups only here.
+    let org_groups = Group::find_by_organization(&org_id, &conn).await;
+    let org_group_ids: HashSet<&GroupId> = org_groups.iter().map(|g| &g.uuid).collect();
+    if let Some(g) = data.groups.iter().find(|g| !org_group_ids.contains(&g.id)) {
+        err!("Invalid group", format!("Group {} does not belong to organization {}!", g.id, org_id))
+    }
+
     for col_id in data.collection_ids {
         let Some(collection) = Collection::find_by_uuid_and_org(&col_id, &org_id, &conn).await else {
             err!("Collection not found")
@@ -806,7 +813,7 @@ async fn get_org_collection_detail(
             } else {
                 // The Bitwarden clients seem to call this API regardless of whether groups are enabled,
                 // so just act as if there are no groups.
-                Vec::with_capacity(0)
+                Vec::new()
             };
 
             // Generate a HashMap to get the correct MembershipType per user to determine the manage permission
@@ -946,6 +953,11 @@ async fn get_members(
     if org_id != headers.membership.org_uuid {
         err!("Organization not found", "Organization id's do not match");
     }
+
+    if !headers.membership.has_full_access() {
+        err_code!("Resource not found.", "User does not have full access", rocket::http::Status::NotFound.code);
+    }
+
     let mut users_json = Vec::new();
     for u in Membership::find_by_org(&org_id, &conn).await {
         users_json.push(
@@ -1167,6 +1179,9 @@ async fn send_invite(
         }
 
         for group_id in &data.groups {
+            if Group::find_by_uuid_and_org(group_id, &org_id, &conn).await.is_none() {
+                err!("Group not found in Organization")
+            }
             let mut group_entry = GroupUser::new(group_id.clone(), new_member.uuid.clone());
             group_entry.save(&conn).await?;
         }
@@ -1614,6 +1629,9 @@ async fn edit_member(
     GroupUser::delete_all_by_member(&member_to_edit.uuid, &conn).await?;
 
     for group_id in data.groups.iter().flatten() {
+        if Group::find_by_uuid_and_org(group_id, &org_id, &conn).await.is_none() {
+            err!("Group not found in Organization")
+        }
         let mut group_entry = GroupUser::new(group_id.clone(), member_to_edit.uuid.clone());
         group_entry.save(&conn).await?;
     }
@@ -1813,19 +1831,19 @@ async fn post_org_import(
     // TODO: See if we can optimize the whole cipher adding/importing and prevent duplicate code and checks.
     Cipher::validate_cipher_data(&data.ciphers)?;
 
-    let existing_collections: HashSet<Option<CollectionId>> =
+    let existing_collections: HashMap<CollectionId, Collection> =
-        Collection::find_by_organization(&org_id, &conn).await.into_iter().map(|c| Some(c.uuid)).collect();
+        Collection::find_by_organization(&org_id, &conn).await.into_iter().map(|c| (c.uuid.clone(), c)).collect();
     let mut collections: Vec<CollectionId> = Vec::with_capacity(data.collections.len());
     for col in data.collections {
-        let collection_uuid = if existing_collections.contains(&col.id) {
+        let existing = col.id.as_ref().and_then(|col_id| existing_collections.get(col_id));
-            let col_id = col.id.unwrap();
+        let collection_uuid = if let Some(collection) = existing {
-            // When not an Owner or Admin, check if the member is allowed to access the collection.
+            // When not an Owner or Admin, check if the member is allowed to write to the collection.
             if headers.membership.atype < MembershipType::Admin
-                && !Collection::can_access_collection(&headers.membership, &col_id, &conn).await
+                && !collection.is_writable_by_user(&headers.membership.user_uuid, &conn).await
             {
                 err!(Compact, "The current user isn't allowed to manage this collection")
             }
-            col_id
+            collection.uuid.clone()
         } else {
             // We do not allow users or managers which can not manage all collections to create new collections
             // If there is any collection other than an existing import collection, abort the import.
@@ -1853,6 +1871,8 @@ async fn post_org_import(
     for mut cipher_data in data.ciphers {
         // Always clear folder_id's via an organization import
         cipher_data.folder_id = None;
+        // Replace the client-provided, unvalidated organizationId with the real target org
+        cipher_data.organization_id = Some(org_id.clone());
         let mut cipher = Cipher::new(cipher_data.r#type, cipher_data.name.clone());
         update_cipher_from_data(
             &mut cipher,
@@ -1870,8 +1890,9 @@ async fn post_org_import(
 
     // Assign the collections
     for (cipher_index, col_index) in relations {
-        let cipher_id = &ciphers[cipher_index];
+        let (Some(cipher_id), Some(col_id)) = (ciphers.get(cipher_index), collections.get(col_index)) else {
-        let col_id = &collections[col_index];
+            err!(Compact, "Invalid collection relationship")
+        };
         CollectionCipher::save(cipher_id, col_id, &conn).await?;
     }
 
@@ -2441,6 +2462,23 @@ async fn get_groups_data(
     if org_id != headers.membership.org_uuid {
         err!("Organization not found", "Organization id's do not match");
     }
+
+    // The details view (group→collection/user mappings) needs full org access; the plain list only
+    // needs manage access to a collection, so a manager of a collection (directly or via a group)
+    // can load it to assign groups.
+    let has_full_access = headers.membership.has_full_access()
+        || (CONFIG.org_groups_enabled()
+            && GroupUser::has_full_access_by_member(&org_id, &headers.membership.uuid, &conn).await);
+    let allowed = if details {
+        has_full_access
+    } else {
+        has_full_access
+            || Collection::has_manageable_collection_by_user(&org_id, &headers.membership.user_uuid, &conn).await
+    };
+    if !allowed {
+        err_code!("Resource not found.", "User does not have access", rocket::http::Status::NotFound.code);
+    }
+
     let groups: Vec<Value> = if CONFIG.org_groups_enabled() {
         let groups = Group::find_by_organization(&org_id, &conn).await;
         let mut groups_json = Vec::with_capacity(groups.len());
@@ -2458,7 +2496,7 @@ async fn get_groups_data(
     } else {
         // The Bitwarden clients seem to call this API regardless of whether groups are enabled,
         // so just act as if there are no groups.
-        Vec::with_capacity(0)
+        Vec::new()
     };
 
     Ok(Json(json!({

src/api/core/public.rs

@@ -14,7 +14,7 @@ use crate::{
     db::{
         DbConn,
         models::{
-            Group, GroupUser, Invitation, Membership, MembershipStatus, MembershipType, Organization,
+            Group, GroupUser, Invitation, Membership, MembershipStatus, MembershipType, OrgPolicy, Organization,
             OrganizationApiKey, OrganizationId, User,
         },
     },
@@ -84,8 +84,15 @@ async fn ldap_import(data: Json<OrgImportData>, token: PublicToken, conn: DbConn
             }
         // If user is part of the organization, restore it
         } else if let Some(mut member) = Membership::find_by_email_and_org(&user_data.email, &org_id, &conn).await {
-            let restored = member.restore();
+            let mut restored = member.restore();
             let ext_modified = member.set_external_id(Some(user_data.external_id.clone()));
+            // Enforce org policies as every other restore path does.
+            // If the user is not allowed, we revoke again and continue so the external_id is still updated.
+            if restored && let Err(e) = OrgPolicy::check_user_allowed(&member, "restore", &conn).await {
+                warn!("Not restoring {}: {e:?}", user_data.email);
+                member.revoke();
+                restored = false;
+            }
             if restored || ext_modified {
                 member.save(&conn).await?;
             }

src/api/core/sends.rs

@@ -453,6 +453,9 @@ async fn post_access(headers: SendHeaders, conn: DbConn, nt: Notify<'_>) -> Json
     let Some(send) = Send::find_by_uuid(&headers.send_id, &conn).await else {
         err_code!(SEND_INACCESSIBLE_MSG, 404)
     };
+    if !send.is_accessible() {
+        err_code!(SEND_INACCESSIBLE_MSG, 404)
+    }
     process_access(send, conn, nt).await
 }
 
@@ -471,6 +474,8 @@ async fn post_access_legacy(
     ip: ClientIp,
     nt: Notify<'_>,
 ) -> JsonResult {
+    crate::ratelimit::check_limit_unauthenticated(&ip.ip)?;
+
     let Some(mut send) = Send::find_by_access_id(access_id, &conn).await else {
         err_code!(SEND_INACCESSIBLE_MSG, 404)
     };
@@ -481,17 +486,7 @@ async fn post_access_legacy(
         err_code!(SEND_INACCESSIBLE_MSG, 404);
     }
 
-    if let Some(expiration) = send.expiration_date
+    if !send.is_accessible() {
-        && Utc::now().naive_utc() >= expiration
-    {
-        err_code!(SEND_INACCESSIBLE_MSG, 404)
-    }
-
-    if Utc::now().naive_utc() >= send.deletion_date {
-        err_code!(SEND_INACCESSIBLE_MSG, 404)
-    }
-
-    if send.disabled {
         err_code!(SEND_INACCESSIBLE_MSG, 404)
     }
 
@@ -505,10 +500,12 @@ async fn post_access_legacy(
 
     // Files are incremented during the download
     if send.atype == SendType::Text as i32 {
-        send.access_count += 1;
+        if !send.register_access(&conn).await? {
+            err_code!(SEND_INACCESSIBLE_MSG, 404)
         }
-
+    } else {
         send.save(&conn).await?;
+    }
 
     process_access(send, conn, nt).await
 }
@@ -537,6 +534,9 @@ async fn post_access_file(
     let Some(send) = Send::find_by_uuid(&headers.send_id, &conn).await else {
         err_code!(SEND_INACCESSIBLE_MSG, 404)
     };
+    if !send.is_accessible() {
+        err_code!(SEND_INACCESSIBLE_MSG, 404)
+    }
     process_access_file(send, file_id, host, conn, nt).await
 }
 
@@ -548,8 +548,11 @@ async fn post_access_file_legacy(
     data: Json<SendAccessData>,
     host: Host,
     conn: DbConn,
+    ip: ClientIp,
     nt: Notify<'_>,
 ) -> JsonResult {
+    crate::ratelimit::check_limit_unauthenticated(&ip.ip)?;
+
     let Some(mut send) = Send::find_by_uuid(&send_id, &conn).await else {
         err_code!(SEND_INACCESSIBLE_MSG, 404)
     };
@@ -560,17 +563,7 @@ async fn post_access_file_legacy(
         err_code!(SEND_INACCESSIBLE_MSG, 404)
     }
 
-    if let Some(expiration) = send.expiration_date
+    if !send.is_accessible() {
-        && Utc::now().naive_utc() >= expiration
-    {
-        err_code!(SEND_INACCESSIBLE_MSG, 404)
-    }
-
-    if Utc::now().naive_utc() >= send.deletion_date {
-        err_code!(SEND_INACCESSIBLE_MSG, 404)
-    }
-
-    if send.disabled {
         err_code!(SEND_INACCESSIBLE_MSG, 404)
     }
 
@@ -582,9 +575,9 @@ async fn post_access_file_legacy(
         }
     }
 
-    send.access_count += 1;
+    if !send.register_access(&conn).await? {
-
+        err_code!(SEND_INACCESSIBLE_MSG, 404)
-    send.save(&conn).await?;
+    }
 
     process_access_file(send, file_id, host, conn, nt).await
 }

src/api/icons.rs

@@ -405,6 +405,22 @@ async fn get_page(url: &str) -> Result<Response, Error> {
 }
 
 async fn get_page_with_referer(url: &str, referer: &str) -> Result<Response, Error> {
+    // The resolver only sees hosts needing name resolution, so IP-literal hrefs from
+    // attacker-controlled HTML never reach `post_resolve()`. Check them here.
+    let Ok(parsed_url) = url::Url::parse(url) else {
+        err_silent!("Invalid URL", url)
+    };
+
+    if !matches!(parsed_url.scheme(), "http" | "https") {
+        err_silent!("Invalid scheme", url)
+    }
+
+    let Some(host) = parsed_url.host() else {
+        err_silent!("Invalid host", url)
+    };
+
+    should_block_host(&host)?;
+
     let mut client = CLIENT.get(url);
     if !referer.is_empty() {
         client = client.header("Referer", referer);

src/api/identity.rs

@@ -109,6 +109,7 @@ async fn login(
         }
         "authorization_code" => err!("SSO sign-in is not available"),
         "send_access" => {
+            crate::ratelimit::check_limit_unauthenticated(&client_header.ip.ip)?;
             check_is_some(data.client_id.as_ref(), "client_id cannot be blank")?;
             check_is_some(data.send_id.as_ref(), "send_id cannot be blank")?;
 
@@ -533,18 +534,7 @@ async fn authenticated_response(
         Value::Null
     };
 
-    let account_keys = if user.private_key.is_some() {
+    let account_keys = user.account_keys_json(conn).await;
-        json!({
-            "publicKeyEncryptionKeyPair": {
-                "wrappedPrivateKey": user.private_key,
-                "publicKey": user.public_key,
-                "Object": "publicKeyEncryptionKeyPair"
-            },
-            "Object": "privateKeys"
-        })
-    } else {
-        Value::Null
-    };
 
     let mut result = json!({
         "access_token": auth_tokens.access_token(),
@@ -684,18 +674,7 @@ async fn user_api_key_login(
         Value::Null
     };
 
-    let account_keys = if user.private_key.is_some() {
+    let account_keys = user.account_keys_json(conn).await;
-        json!({
-            "publicKeyEncryptionKeyPair": {
-                "wrappedPrivateKey": user.private_key,
-                "publicKey": user.public_key,
-                "Object": "publicKeyEncryptionKeyPair"
-            },
-            "Object": "privateKeys"
-        })
-    } else {
-        Value::Null
-    };
 
     // Note: No refresh_token is returned. The CLI just repeats the
     // client_credentials login flow when the existing token expires.
@@ -1055,8 +1034,11 @@ enum RegisterVerificationResponse {
 #[post("/accounts/register/send-verification-email", data = "<data>")]
 async fn register_verification_email(
     data: Json<RegisterVerificationData>,
+    ip: ClientIp,
     conn: DbConn,
 ) -> ApiResult<RegisterVerificationResponse> {
+    crate::ratelimit::check_limit_unauthenticated(&ip.ip)?;
+
     let data = data.into_inner();
 
     // the registration can only continue if signup is allowed or there exists an invitation

src/api/notifications.rs

@@ -33,9 +33,14 @@ pub static WS_USERS: LazyLock<Arc<WebSocketUsers>> = LazyLock::new(|| {
 pub static WS_ANONYMOUS_SUBSCRIPTIONS: LazyLock<Arc<AnonymousWebSocketSubscriptions>> = LazyLock::new(|| {
     Arc::new(AnonymousWebSocketSubscriptions {
         map: Arc::new(dashmap::DashMap::new()),
+        connections: Arc::new(dashmap::DashMap::new()),
     })
 });
 
+/// The anonymous hub needs no authentication, so bound how much a single client can hold open.
+/// One connection is needed per pending login request, several at once are only expected behind NAT.
+const MAX_ANONYMOUS_CONNECTIONS_PER_IP: u32 = 25;
+
 static NOTIFICATIONS_DISABLED: LazyLock<bool> = LazyLock::new(|| !CONFIG.enable_websocket() && !CONFIG.push_enabled());
 
 pub fn routes() -> Vec<Route> {
@@ -82,14 +87,21 @@ impl Drop for WSEntryMapGuard {
 struct WSAnonymousEntryMapGuard {
     subscriptions: Arc<AnonymousWebSocketSubscriptions>,
     token: String,
+    entry_uuid: uuid::Uuid,
     addr: IpAddr,
 }
 
 impl WSAnonymousEntryMapGuard {
-    fn new(subscriptions: Arc<AnonymousWebSocketSubscriptions>, token: String, addr: IpAddr) -> Self {
+    fn new(
+        subscriptions: Arc<AnonymousWebSocketSubscriptions>,
+        token: String,
+        entry_uuid: uuid::Uuid,
+        addr: IpAddr,
+    ) -> Self {
         Self {
             subscriptions,
             token,
+            entry_uuid,
             addr,
         }
     }
@@ -98,7 +110,11 @@ impl WSAnonymousEntryMapGuard {
 impl Drop for WSAnonymousEntryMapGuard {
     fn drop(&mut self) {
         info!("Closing WS connection from {}", self.addr);
-        self.subscriptions.map.remove(&self.token);
+        if let Some(mut entry) = self.subscriptions.map.get_mut(&self.token) {
+            entry.retain(|(uuid, _)| uuid != &self.entry_uuid);
+        }
+        self.subscriptions.map.remove_if(&self.token, |_, senders| senders.is_empty());
+        self.subscriptions.release(self.addr);
     }
 }
 
@@ -194,12 +210,19 @@ fn anonymous_websockets_hub<'r>(ws: WebSocket, token: String, ip: ClientIp) -> R
     let (mut rx, guard) = {
         let subscriptions = Arc::clone(&WS_ANONYMOUS_SUBSCRIPTIONS);
 
-        // Add a channel to send messages to this client to the map
+        if !subscriptions.try_reserve(ip.ip) {
+            err_code!("Too many connections", 429)
+        }
+
+        // Add a channel to send messages to this client to the map.
+        // Clients reconnect with the same token while a login request is still pending, so keep
+        // every subscriber instead of replacing, otherwise the older one takes the newer one down.
         let (tx, rx) = tokio::sync::mpsc::channel::<Message>(100);
-        subscriptions.map.insert(token.clone(), tx);
+        let entry_uuid = uuid::Uuid::new_v4();
+        subscriptions.map.entry(token.clone()).or_default().push((entry_uuid, tx));
 
         // Once the guard goes out of scope, the connection will have been closed and the entry will be deleted from the map
-        (rx, WSAnonymousEntryMapGuard::new(subscriptions, token, ip.ip))
+        (rx, WSAnonymousEntryMapGuard::new(subscriptions, token, entry_uuid, ip.ip))
     };
 
     Ok({
@@ -534,17 +557,44 @@ impl WebSocketUsers {
 
 #[derive(Clone)]
 pub struct AnonymousWebSocketSubscriptions {
-    map: Arc<dashmap::DashMap<String, Sender<Message>>>,
+    map: Arc<dashmap::DashMap<String, Vec<UserSenders>>>,
+    connections: Arc<dashmap::DashMap<IpAddr, u32>>,
 }
 
 impl AnonymousWebSocketSubscriptions {
+    /// Takes a connection slot for this address, returns false when it already reached the limit.
+    fn try_reserve(&self, addr: IpAddr) -> bool {
+        let mut count = self.connections.entry(addr).or_insert(0);
+        if *count >= MAX_ANONYMOUS_CONNECTIONS_PER_IP {
+            return false;
+        }
+        *count += 1;
+        true
+    }
+
+    /// Releases a slot taken by `try_reserve`.
+    fn release(&self, addr: IpAddr) {
+        let empty = if let Some(mut count) = self.connections.get_mut(&addr) {
+            *count = count.saturating_sub(1);
+            *count == 0
+        } else {
+            false
+        };
+        // Only remove once the guard above is dropped, otherwise this deadlocks.
+        if empty {
+            self.connections.remove_if(&addr, |_, count| *count == 0);
+        }
+    }
+
     async fn send_update(&self, token: &str, data: &[u8]) {
-        if let Some(sender) = self.map.get(token).map(|v| v.clone())
+        // Clone the senders so the map isn't kept locked while sending.
-            && let Err(e) = sender.send(Message::binary(data)).await
+        let senders = self.map.get(token).map(|v| v.clone()).unwrap_or_default();
-        {
+        for (_, sender) in senders {
+            if let Err(e) = sender.send(Message::binary(data)).await {
                 error!("Error sending WS update {e}");
             }
         }
+    }
 
     pub async fn send_auth_response(&self, user_id: &UserId, auth_request_id: &AuthRequestId) {
         if !CONFIG.enable_websocket() {

src/auth.rs

@@ -10,6 +10,7 @@ use std::{
 };
 
 use chrono::{DateTime, TimeDelta, Utc};
+use ipnet::IpNet;
 use jsonwebtoken::{Algorithm, DecodingKey, EncodingKey, Header, errors::ErrorKind};
 use num_traits::FromPrimitive;
 use openssl::rsa::Rsa;
@@ -1054,12 +1055,44 @@ pub struct ClientIp {
     pub ip: IpAddr,
 }
 
+/// Parses a single entry of `ip_header_trusted_proxies`, which can be a CIDR range or a plain IP.
+pub fn parse_trusted_proxy(entry: &str) -> Option<IpNet> {
+    let entry = entry.trim();
+    match entry.parse::<IpNet>() {
+        Ok(net) => Some(net),
+        // Without a prefix length it is a single address, which is a valid way to write this.
+        Err(_) => entry.parse::<IpAddr>().ok().map(IpNet::from),
+    }
+}
+
+/// The client IP header can be set by anyone able to reach us, so only accept it from a proxy we trust.
+fn ip_header_is_trusted(remote: Option<IpAddr>) -> bool {
+    let trusted = CONFIG.ip_header_trusted_proxies();
+    let trusted = trusted.trim();
+    if trusted.eq_ignore_ascii_case("all") {
+        return true;
+    }
+
+    let Some(remote) = remote else {
+        return false;
+    };
+    // A dual stack listener reports IPv4 clients as IPv4-mapped IPv6, which `is_global()` reports as
+    // non global. That is what we want when blocking outgoing requests, but here it would trust them.
+    let remote = remote.to_canonical();
+    if trusted.eq_ignore_ascii_case("local") {
+        return !crate::util::is_global(remote);
+    }
+    trusted.split(',').filter_map(parse_trusted_proxy).any(|net| net.contains(&remote))
+}
+
 #[rocket::async_trait]
 impl<'r> FromRequest<'r> for ClientIp {
     type Error = ();
 
     async fn from_request(req: &'r Request<'_>) -> Outcome<Self, Self::Error> {
-        let ip = if CONFIG._ip_header_enabled() {
+        let remote = req.remote().map(|r| r.ip());
+
+        let ip = if CONFIG._ip_header_enabled() && ip_header_is_trusted(remote) {
             req.headers().get_one(&CONFIG.ip_header()).and_then(|ip| {
                 match ip.find(',') {
                     Some(idx) => &ip[..idx],
@@ -1070,10 +1103,15 @@ impl<'r> FromRequest<'r> for ClientIp {
                 .ok()
             })
         } else {
+            if CONFIG._ip_header_enabled() && req.headers().get_one(&CONFIG.ip_header()).is_some() {
+                // Log the canonical IP, which is what the user filter will need to match against
+                let remote = remote.map(|ip| ip.to_canonical());
+                debug!("Ignoring the '{}' header, {remote:?} is not a trusted proxy", CONFIG.ip_header());
+            }
             None
         };
 
-        let ip = ip.or_else(|| req.remote().map(|r| r.ip())).unwrap_or_else(|| "0.0.0.0".parse().unwrap());
+        let ip = ip.or(remote).unwrap_or_else(|| "0.0.0.0".parse().unwrap());
 
         Outcome::Success(ClientIp {
             ip,
@@ -1268,20 +1306,8 @@ pub async fn refresh_tokens(
 ) -> ApiResult<(Device, AuthTokens)> {
     let refresh_claims = match decode_refresh(refresh_token) {
         Err(err) => {
-            error!("Failed to decode {} refresh_token: {refresh_token}: {err:?}", ip.ip);
+            error!("Failed to decode refresh_token from {}: {err:?}", ip.ip);
-            //err_silent!(format!("Impossible to read refresh_token: {}", err.message()))
+            err_silent!("Invalid refresh token")
-
-            // If the token failed to decode, it was probably one of the old style tokens that was just a Base64 string.
-            // We can generate a claim for them for backwards compatibility. Note that the password refresh claims don't
-            // check expiration or issuer, so they're not included here.
-            RefreshJwtClaims {
-                nbf: 0,
-                exp: 0,
-                iss: String::new(),
-                sub: AuthMethod::Password,
-                device_token: refresh_token.into(),
-                token: None,
-            }
         }
         Ok(claims) => claims,
     };

src/auth/send.rs

@@ -85,18 +85,8 @@ impl SendTokens {
             return Self::invalid_error(&format!("Send {send_id}, max access reached"), "send_id_invalid", true);
         }
 
-        if let Some(expiration) = send.expiration_date
+        if !send.is_accessible() {
-            && Utc::now().naive_utc() >= expiration
+            return Self::invalid_error(&format!("Send {send_id}, not accessible"), "send_id_invalid", true);
-        {
-            return Self::invalid_error(&format!("Send {send_id}, expired"), "send_id_invalid", true);
-        }
-
-        if Utc::now().naive_utc() >= send.deletion_date {
-            return Self::invalid_error(&format!("Send {send_id}, past deletion"), "send_id_invalid", true);
-        }
-
-        if send.disabled {
-            return Self::invalid_error(&format!("Send {send_id}, disabled"), "send_id_invalid", true);
         }
 
         if send.password_hash.is_some() {
@@ -113,8 +103,9 @@ impl SendTokens {
             }
         }
 
-        send.access_count += 1;
+        if !send.register_access(conn).await? {
-        send.save(conn).await?;
+            return Self::invalid_error(&format!("Send {send_id}, max access reached"), "send_id_invalid", true);
+        }
 
         Ok(Self {
             access_claims: generate_send_access_claims(&send_id),

src/config.rs

@@ -666,6 +666,12 @@ make_config! {
         ip_header:              String, true,   def,    "X-Real-IP".to_owned();
         /// Internal IP header property, used to avoid recomputing each time
         _ip_header_enabled:     bool,   false,  generated,    |c| &c.ip_header.trim().to_lowercase() != "none";
+        /// Trusted proxies |> Which addresses the client IP header is accepted from. Requests from any
+        /// other address use the remote IP instead, so a client can't spoof the header.
+        /// Either the string "local" (the default, any non-global address, which covers a reverse proxy
+        /// running on the same host or container network), the string "all" to accept it from anywhere,
+        /// or a comma separated list of IPs and CIDR ranges.
+        ip_header_trusted_proxies: String, true, def,    "local".to_owned();
         /// Icon service |> The predefined icon services are: internal, bitwarden, duckduckgo, google.
         /// To specify a custom icon service, set a URL template with exactly one instance of `{}`,
         /// which is replaced with the domain. For example: `https://icon.example.com/domain/{}`.
@@ -768,6 +774,11 @@ make_config! {
         /// Max burst size for login requests |> Allow a burst of requests of up to this size, while maintaining the average indicated by `login_ratelimit_seconds`. Note that this applies to both the login and the 2FA, so it's recommended to allow a burst size of at least 2
         login_ratelimit_max_burst:     u32, false, def, 10;
 
+        /// Seconds between unauthenticated requests |> Number of seconds, on average, between requests from the same IP address to any of the rate limited unauthenticated endpoints
+        unauthenticated_ratelimit_seconds:   u64, false, def, 60;
+        /// Max burst size for unauthenticated requests |> Allow a burst of requests of up to this size, while maintaining the average indicated by `unauthenticated_ratelimit_seconds`. This is shared between several endpoints, so it needs to be more lenient than the login one
+        unauthenticated_ratelimit_max_burst: u32, false, def, 50;
+
         /// Seconds between admin login requests |> Number of seconds, on average, between admin requests from the same IP address before rate limiting kicks in
         admin_ratelimit_seconds:       u64, false, def, 300;
         /// Max burst size for admin login requests |> Allow a burst of requests of up to this size, while maintaining the average indicated by `admin_ratelimit_seconds`
@@ -942,6 +953,18 @@ fn validate_config(cfg: &ConfigItems, on_update: bool) -> Result<(), Error> {
         }
     }
 
+    let trusted_proxies = cfg.ip_header_trusted_proxies.trim();
+    if !trusted_proxies.eq_ignore_ascii_case("all") && !trusted_proxies.eq_ignore_ascii_case("local") {
+        for entry in trusted_proxies.split(',').filter(|e| !e.trim().is_empty()) {
+            if crate::auth::parse_trusted_proxy(entry).is_none() {
+                err!(format!(
+                    "Invalid IP_HEADER_TRUSTED_PROXIES entry `{}`, expected an IP or CIDR range",
+                    entry.trim()
+                ));
+            }
+        }
+    }
+
     if cfg.password_iterations < 100_000 {
         err!("PASSWORD_ITERATIONS should be at least 100000 or higher. The default is 600000!");
     }

src/db/models/cipher.rs

@@ -42,13 +42,15 @@ pub struct Cipher {
 
     pub key: Option<String>,
 
-    /*
+    // See (v2026.7.0): https://github.com/bitwarden/server/blob/5d4461aa42cadbacfef8fe2166c5453a5c52773a/src/Core/Vault/Enums/CipherType.cs
-    Login = 1,
+    // Login = 1,
-    SecureNote = 2,
+    // SecureNote = 2,
-    Card = 3,
+    // Card = 3,
-    Identity = 4,
+    // Identity = 4,
-    SshKey = 5
+    // SSHKey = 5
-    */
+    // BankAccount = 6,
+    // DriversLicense = 7,
+    // Passport = 8,
     pub atype: i32,
     pub name: String,
     pub notes: Option<String>,
@@ -306,21 +308,11 @@ impl Cipher {
             type_data_json = Value::Null;
         }
 
-        // Clone the type_data and add some default value.
-        let mut data_json = type_data_json.clone();
-
-        // NOTE: This was marked as *Backwards Compatibility Code*, but as of January 2021 this is still being used by upstream
-        // data_json should always contain the following keys with every atype
-        data_json["fields"] = json!(fields_json);
-        data_json["name"] = json!(self.name);
-        data_json["notes"] = json!(self.notes);
-        data_json["passwordHistory"] = Value::Array(password_history_json.clone());
-
         let collection_ids = if let Some(cipher_sync_data) = cipher_sync_data {
             if let Some(cipher_collections) = cipher_sync_data.cipher_collections.get(&self.uuid) {
                 Cow::from(cipher_collections)
             } else {
-                Cow::from(Vec::with_capacity(0))
+                Cow::from(Vec::new())
             }
         } else {
             Cow::from(self.get_admin_collections(user_uuid.clone(), conn).await)
@@ -355,8 +347,6 @@ impl Cipher {
             "notes": self.notes,
             "fields": fields_json,
 
-            "data": data_json,
-
             "passwordHistory": password_history_json,
 
             // All Cipher types are included by default as null, but only the matching one will be populated
@@ -365,6 +355,9 @@ impl Cipher {
             "card": null,
             "identity": null,
             "sshKey": null,
+            "bankAccount": null,
+            "driversLicense": null,
+            "passport": null,
         });
 
         // These values are only needed for user/default syncs
@@ -404,6 +397,9 @@ impl Cipher {
             3 => "card",
             4 => "identity",
             5 => "sshKey",
+            6 => "bankAccount",
+            7 => "driversLicense",
+            8 => "passport",
             _ => err!(format!("Cipher {} has an invalid type {}", self.uuid, self.atype)),
         };
 

src/db/models/collection.rs

@@ -21,6 +21,7 @@ use super::{
     User, UserId,
 };
 
+// See (v2026.7.0): https://github.com/bitwarden/server/blob/5d4461aa42cadbacfef8fe2166c5453a5c52773a/src/Core/AdminConsole/Entities/Collection.cs
 #[derive(Identifiable, Queryable, Insertable, AsChangeset)]
 #[diesel(table_name = collections)]
 #[diesel(treat_none_as_null = true)]
@@ -71,6 +72,11 @@ impl Collection {
             "id": self.uuid,
             "organizationId": self.org_uuid,
             "name": self.name,
+            // Collection types are either 0: SharedCollection or 1: DefaultUserCollection, of which we do not yet support DefaultUserCollection.
+            // See (v2026.7.0): https://github.com/bitwarden/server/blob/5d4461aa42cadbacfef8fe2166c5453a5c52773a/src/Core/AdminConsole/Enums/CollectionType.cs
+            "type": 0,
+            // This is only used together with MyItems/DefaultUserCollection, which we do not yet support.
+            "defaultUserCollectionEmail": null,
             "object": "collection",
         })
     }
@@ -623,6 +629,47 @@ impl Collection {
     pub async fn is_manageable_by_user(&self, user_uuid: &UserId, conn: &DbConn) -> bool {
         Self::is_coll_manageable_by_user(&self.uuid, user_uuid, conn).await
     }
+
+    // Whether the user has manage access to at least one collection in the org, directly or via a
+    // group. Org-scoped counterpart of is_coll_manageable_by_user.
+    pub async fn has_manageable_collection_by_user(
+        org_uuid: &OrganizationId,
+        user_uuid: &UserId,
+        conn: &DbConn,
+    ) -> bool {
+        let org_uuid = org_uuid.to_string();
+        let user_uuid = user_uuid.to_string();
+        conn.run(move |conn| {
+            collections::table
+                .left_join(
+                    users_collections::table.on(users_collections::collection_uuid
+                        .eq(collections::uuid)
+                        .and(users_collections::user_uuid.eq(user_uuid.clone()))),
+                )
+                .left_join(
+                    users_organizations::table.on(collections::org_uuid
+                        .eq(users_organizations::org_uuid)
+                        .and(users_organizations::user_uuid.eq(user_uuid))),
+                )
+                .left_join(groups_users::table.on(groups_users::users_organizations_uuid.eq(users_organizations::uuid)))
+                .left_join(
+                    collections_groups::table.on(collections_groups::groups_uuid
+                        .eq(groups_users::groups_uuid)
+                        .and(collections_groups::collections_uuid.eq(collections::uuid))),
+                )
+                .filter(collections::org_uuid.eq(&org_uuid))
+                .filter(
+                    // Manage permission on a collection assigned directly or via a group.
+                    users_collections::manage.eq(true).or(collections_groups::manage.eq(true)),
+                )
+                .count()
+                .first::<i64>(conn)
+                .ok()
+                .unwrap_or(0)
+                != 0
+        })
+        .await
+    }
 }
 
 /// Database methods

src/db/models/group.rs

@@ -271,7 +271,9 @@ impl Group {
             groups::table
                 .inner_join(groups_users::table.on(groups_users::groups_uuid.eq(groups::uuid)))
                 .inner_join(
-                    users_organizations::table.on(users_organizations::uuid.eq(groups_users::users_organizations_uuid)),
+                    users_organizations::table.on(users_organizations::uuid
+                        .eq(groups_users::users_organizations_uuid)
+                        .and(users_organizations::org_uuid.eq(groups::organizations_uuid))),
                 )
                 .filter(users_organizations::user_uuid.eq(user_uuid))
                 .filter(groups::organizations_uuid.eq(org_uuid))

src/db/models/mod.rs

@@ -17,6 +17,7 @@ mod two_factor;
 mod two_factor_duo_context;
 mod two_factor_incomplete;
 mod user;
+mod user_signature_key_pair;
 
 pub use self::archive::Archive;
 pub use self::attachment::{Attachment, AttachmentId};
@@ -34,12 +35,10 @@ pub use self::organization::{
     Membership, MembershipId, MembershipStatus, MembershipType, OrgApiKeyId, Organization, OrganizationApiKey,
     OrganizationId,
 };
-pub use self::send::{
+pub use self::send::{Send, SendFileId, SendId, SendType};
-    Send, SendType,
-    id::{SendFileId, SendId},
-};
 pub use self::sso_auth::{OIDCAuthenticatedUser, OIDCCodeResponseError, SsoAuth};
 pub use self::two_factor::{TwoFactor, TwoFactorType};
 pub use self::two_factor_duo_context::TwoFactorDuoContext;
 pub use self::two_factor_incomplete::TwoFactorIncomplete;
 pub use self::user::{Invitation, SsoUser, User, UserId, UserKdfType, UserStampException};
+pub use self::user_signature_key_pair::{SignatureAlgorithm, UserSignatureKeyPair};

src/db/models/organization.rs

@@ -217,11 +217,18 @@ impl Organization {
             "useSecretsManager": false, // Not supported (Not AGPLv3 Licensed)
             "selfHost": true,
             "useApi": true,
+            "useDisableSMAdsForUsers": true, // Hide Secrets Manager ads
+            "useInviteLinks": false, // Not (yet) supported
+            "useMyItems": false, // Not (yet) supported
+            "useOrganizationDomains": false, // Not supported (Linked to SSO)
+            "usePam": false, // Not supported
+            "usePhishingBlocker": false,
             "hasPublicAndPrivateKeys": self.private_key.is_some() && self.public_key.is_some(),
             "useResetPassword": CONFIG.mail_enabled(),
             "allowAdminAccessToAllCollectionItems": true,
             "limitCollectionCreation": true,
             "limitCollectionDeletion": true,
+            "limitItemDeletion": false,
 
             "businessName": self.name,
             "businessAddress1": null,
@@ -495,6 +502,12 @@ impl Membership {
             "useActivateAutofillPolicy": false,
             "useAdminSponsoredFamilies": false,
             "useRiskInsights": false, // Not supported (Not AGPLv3 Licensed)
+            "useDisableSMAdsForUsers": true, // Hide Secrets Manager ads
+            "useInviteLinks": false, // Not (yet) supported
+            "useMyItems": false, // Not (yet) supported
+            "useOrganizationDomains": false, // Not supported (Linked to SSO)
+            "usePam": false, // Not supported
+            "usePhishingBlocker": false,
 
             "organizationUserId": self.uuid,
             "providerId": null,
@@ -550,7 +563,7 @@ impl Membership {
         } else {
             // The Bitwarden clients seem to call this API regardless of whether groups are enabled,
             // so just act as if there are no groups.
-            Vec::with_capacity(0)
+            Vec::new()
         };
 
         // Check if a user is in a group which has access to all collections
@@ -604,7 +617,7 @@ impl Membership {
                 })
                 .collect()
         } else {
-            Vec::with_capacity(0)
+            Vec::new()
         };
 
         // HACK: Convert the manager type to a custom type

src/db/models/send.rs

@@ -1,6 +1,10 @@
+use std::path::Path;
+
 use chrono::{NaiveDateTime, Utc};
 use data_encoding::BASE64URL_NOPAD;
+use derive_more::{AsRef, Deref, Display, From};
 use diesel::prelude::*;
+use macros::{IdFromParam, UuidFromParam};
 use serde_json::Value;
 use uuid::Uuid;
 
@@ -14,7 +18,6 @@ use crate::{
 };
 
 use super::{OrganizationId, User, UserId};
-use id::SendId;
 
 #[derive(Identifiable, Queryable, Insertable, AsChangeset)]
 #[diesel(table_name = sends)]
@@ -228,6 +231,53 @@ impl Send {
         }
     }
 
+    /// Registers an access, incrementing `access_count` only while below `max_access_count`.
+    /// Returns false when the limit was already reached. The check and the increment are a single
+    /// statement, otherwise concurrent accesses can both pass the check and exceed the limit.
+    pub async fn register_access(&mut self, conn: &DbConn) -> Result<bool, crate::Error> {
+        self.update_users_revision(conn).await;
+
+        let revision_date = Utc::now().naive_utc();
+        let uuid = self.uuid.clone();
+        let updated = conn
+            .run(move |conn| {
+                diesel::update(sends::table)
+                    .filter(sends::uuid.eq(uuid))
+                    .filter(
+                        sends::max_access_count
+                            .is_null()
+                            .or(sends::access_count.nullable().lt(sends::max_access_count)),
+                    )
+                    .set((sends::access_count.eq(sends::access_count + 1), sends::revision_date.eq(revision_date)))
+                    .execute(conn)
+            })
+            .await?;
+
+        if updated == 0 {
+            return Ok(false);
+        }
+
+        self.access_count += 1;
+        self.revision_date = revision_date;
+        Ok(true)
+    }
+
+    /// Whether the Send is currently within its validity window: not disabled, not past its
+    /// expiration date, and not past its deletion date. Does not consider `max_access_count`
+    /// (consumed at token issuance) or the password.
+    pub fn is_accessible(&self) -> bool {
+        let now = Utc::now().naive_utc();
+        if self.disabled {
+            return false;
+        }
+        if let Some(expiration) = self.expiration_date
+            && now >= expiration
+        {
+            return false;
+        }
+        now < self.deletion_date
+    }
+
     pub async fn delete(&self, conn: &DbConn) -> EmptyResult {
         self.update_users_revision(conn).await;
 
@@ -335,13 +385,6 @@ impl Send {
     }
 }
 
-// separate namespace to avoid name collision with std::marker::Send
-pub mod id {
-    use derive_more::{AsRef, Deref, Display, From};
-    use macros::{IdFromParam, UuidFromParam};
-    use std::marker::Send;
-    use std::path::Path;
-
 #[derive(
     Clone,
     Debug,
@@ -378,4 +421,3 @@ pub mod id {
         Path::new(&self.0)
     }
 }
-}

src/db/models/user.rs

@@ -20,6 +20,7 @@ use macros::UuidFromParam;
 
 use super::{
     Cipher, Device, EmergencyAccess, Favorite, Folder, Membership, MembershipType, TwoFactor, TwoFactorIncomplete,
+    UserSignatureKeyPair,
 };
 
 #[derive(Identifiable, Queryable, Insertable, AsChangeset, Selectable)]
@@ -69,6 +70,15 @@ pub struct User {
     pub avatar_color: Option<String>,
 
     pub external_id: Option<String>, // Todo: Needs to be removed in the future, this is not used anymore.
+
+    // "v2" account cryptographic state. Either all of these are set (together with a row in
+    // `user_signature_key_pairs`) or none of them are; see `User::is_v2`.
+    pub signed_public_key: Option<String>,
+    pub security_state: Option<String>,
+    pub security_version: Option<i32>,
+    /// JSON `{"wrappedUserKey1": ..., "wrappedUserKey2": ...}`, letting clients that still hold the
+    /// v1 user key obtain the v2 one after another client performed the upgrade. Opaque to us.
+    pub v2_upgrade_token: Option<String>,
 }
 
 #[derive(Identifiable, Queryable, Insertable)]
@@ -154,9 +164,18 @@ impl User {
             avatar_color: None,
 
             external_id: None, // Todo: Needs to be removed in the future, this is not used anymore.
+
+            signed_public_key: None,
+            security_state: None,
+            security_version: None,
+            v2_upgrade_token: None,
         }
     }
 
+    pub fn is_v2(&self) -> bool {
+        self.signed_public_key.is_some() && self.security_state.is_some() && self.security_version.is_some()
+    }
+
     pub fn check_valid_password(&self, password: &str) -> bool {
         crypto::verify_password_hash(
             password.as_bytes(),
@@ -253,6 +272,61 @@ impl User {
 
 /// Database methods
 impl User {
+    async fn v2_signature_key_pair(&self, conn: &DbConn) -> Option<UserSignatureKeyPair> {
+        if !self.is_v2() {
+            return None;
+        }
+        UserSignatureKeyPair::find_active_by_user(&self.uuid, conn).await
+    }
+
+    pub async fn account_keys_json(&self, conn: &DbConn) -> Value {
+        if self.private_key.is_none() {
+            return Value::Null;
+        }
+
+        let (signed_public_key, signature_key_pair, security_state) = match self.v2_signature_key_pair(conn).await {
+            Some(key_pair) => (
+                json!(self.signed_public_key),
+                key_pair.to_json(),
+                json!({
+                    "securityState": self.security_state,
+                    "securityVersion": self.security_version,
+                }),
+            ),
+            None => (Value::Null, Value::Null, Value::Null),
+        };
+
+        json!({
+            "publicKeyEncryptionKeyPair": {
+                "wrappedPrivateKey": self.private_key,
+                "publicKey": self.public_key,
+                "signedPublicKey": signed_public_key,
+                "object": "publicKeyEncryptionKeyPair",
+            },
+            "signatureKeyPair": signature_key_pair,
+            "securityState": security_state,
+            "object": "privateKeys"
+        })
+    }
+
+    pub async fn public_keys_json(&self, conn: &DbConn) -> Value {
+        let (signed_public_key, verifying_key) = match self.v2_signature_key_pair(conn).await {
+            Some(key_pair) => (json!(self.signed_public_key), json!(key_pair.verifying_key)),
+            None => (Value::Null, Value::Null),
+        };
+
+        json!({
+            "publicKey": self.public_key,
+            "signedPublicKey": signed_public_key,
+            "verifyingKey": verifying_key,
+            "object": "publicKeys"
+        })
+    }
+
+    pub fn v2_upgrade_token_json(&self) -> Value {
+        self.v2_upgrade_token.as_ref().and_then(|token| serde_json::from_str(token).ok()).unwrap_or(Value::Null)
+    }
+
     pub async fn to_json(&self, conn: &DbConn) -> Value {
         let mut orgs_json = Vec::new();
         for c in Membership::find_confirmed_by_user(&self.uuid, conn).await {
@@ -268,8 +342,11 @@ impl User {
             UserStatus::Enabled
         };
 
+        let account_keys = self.account_keys_json(conn).await;
+
         json!({
             "_status": status as i32,
+            "accountKeys": account_keys,
             "id": self.uuid,
             "name": self.name,
             "email": self.email,
@@ -340,6 +417,7 @@ impl User {
         Device::delete_all_by_user(&self.uuid, conn).await?;
         TwoFactor::delete_all_by_user(&self.uuid, conn).await?;
         TwoFactorIncomplete::delete_all_by_user(&self.uuid, conn).await?;
+        UserSignatureKeyPair::delete_all_by_user(&self.uuid, conn).await?;
         Invitation::take(&self.email, conn).await; // Delete invitation if any
 
         conn.run(move |conn| {

src/db/models/user_signature_key_pair.rs

@@ -0,0 +1,169 @@
+use chrono::{NaiveDateTime, Utc};
+use derive_more::{AsRef, Deref, Display, From};
+use diesel::prelude::*;
+use serde_json::Value;
+
+use crate::{
+    api::EmptyResult,
+    db::{DbConn, schema::user_signature_key_pairs},
+    error::MapResult,
+    util::get_uuid,
+};
+use macros::UuidFromParam;
+
+use super::UserId;
+
+/// A user's signature key pair, part of the "v2" account cryptographic state.
+///
+/// Upstream keeps this in its own table rather than as columns on the user, with a unique index on
+/// the user id. The stated intent is to eventually keep superseded key pairs around (an `active`
+/// flag was sketched but not shipped), which is why this is modelled as a row with its own identity
+/// instead of a set of user attributes.
+///
+/// Ref: <https://github.com/bitwarden/server/blob/main/src/Sql/dbo/KeyManagement/Tables/UserSignatureKeyPair.sql>
+#[derive(Identifiable, Queryable, Insertable, AsChangeset, Selectable)]
+#[diesel(table_name = user_signature_key_pairs)]
+#[diesel(treat_none_as_null = true)]
+#[diesel(primary_key(uuid))]
+pub struct UserSignatureKeyPair {
+    pub uuid: UserSignatureKeyPairId,
+    pub user_uuid: UserId,
+
+    pub signature_algorithm: i32,
+    /// The signing (private) key, wrapped by the user key.
+    pub signing_key: String,
+    /// The COSE-encoded public verifying key.
+    pub verifying_key: String,
+
+    pub created_at: NaiveDateTime,
+    pub updated_at: NaiveDateTime,
+}
+
+/// https://github.com/bitwarden/server/blob/main/src/Core/KeyManagement/Enums/SignatureAlgorithm.cs
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum SignatureAlgorithm {
+    Ed25519 = 0,
+    MlDsa44 = 1,
+}
+
+impl SignatureAlgorithm {
+    pub fn from_str(algorithm: &str) -> Option<Self> {
+        match algorithm {
+            "ed25519" => Some(Self::Ed25519),
+            "mldsa44" => Some(Self::MlDsa44),
+            _ => None,
+        }
+    }
+
+    pub fn from_i32(algorithm: i32) -> Option<Self> {
+        match algorithm {
+            0 => Some(Self::Ed25519),
+            1 => Some(Self::MlDsa44),
+            _ => None,
+        }
+    }
+
+    pub fn as_str(self) -> &'static str {
+        match self {
+            Self::Ed25519 => "ed25519",
+            Self::MlDsa44 => "mldsa44",
+        }
+    }
+}
+
+/// Local methods
+impl UserSignatureKeyPair {
+    pub fn new(
+        user_uuid: UserId,
+        signature_algorithm: SignatureAlgorithm,
+        signing_key: String,
+        verifying_key: String,
+    ) -> Self {
+        let now = Utc::now().naive_utc();
+
+        Self {
+            uuid: UserSignatureKeyPairId(get_uuid()),
+            user_uuid,
+            signature_algorithm: signature_algorithm as i32,
+            signing_key,
+            verifying_key,
+            created_at: now,
+            updated_at: now,
+        }
+    }
+
+    pub fn to_json(&self) -> Value {
+        json!({
+            "wrappedSigningKey": self.signing_key,
+            "verifyingKey": self.verifying_key,
+            "object": "signatureKeyPair",
+        })
+    }
+}
+
+/// Database methods
+impl UserSignatureKeyPair {
+    pub async fn save(&mut self, conn: &DbConn) -> EmptyResult {
+        self.updated_at = Utc::now().naive_utc();
+
+        db_run! { conn:
+            mysql {
+                diesel::insert_into(user_signature_key_pairs::table)
+                    .values(&*self)
+                    .on_conflict(diesel::dsl::DuplicatedKeys)
+                    .do_update()
+                    .set(&*self)
+                    .execute(conn)
+                    .map_res("Error saving user signature key pair")
+            }
+            postgresql, sqlite {
+                diesel::insert_into(user_signature_key_pairs::table)
+                    .values(&*self)
+                    .on_conflict(user_signature_key_pairs::user_uuid)
+                    .do_update()
+                    .set(&*self)
+                    .execute(conn)
+                    .map_res("Error saving user signature key pair")
+            }
+        }
+    }
+
+    /// The key pair currently in use by the user. There is at most one today, enforced by a unique
+    /// index on `user_uuid`.
+    pub async fn find_active_by_user(user_uuid: &UserId, conn: &DbConn) -> Option<Self> {
+        conn.run(move |conn| {
+            user_signature_key_pairs::table
+                .filter(user_signature_key_pairs::user_uuid.eq(user_uuid))
+                .first::<Self>(conn)
+                .ok()
+        })
+        .await
+    }
+
+    pub async fn delete_all_by_user(user_uuid: &UserId, conn: &DbConn) -> EmptyResult {
+        conn.run(move |conn| {
+            diesel::delete(user_signature_key_pairs::table.filter(user_signature_key_pairs::user_uuid.eq(user_uuid)))
+                .execute(conn)
+                .map_res("Error deleting user signature key pairs")
+        })
+        .await
+    }
+}
+
+#[derive(
+    Clone,
+    Debug,
+    AsRef,
+    Deref,
+    DieselNewType,
+    Display,
+    From,
+    FromForm,
+    Hash,
+    PartialEq,
+    Eq,
+    Serialize,
+    Deserialize,
+    UuidFromParam,
+)]
+pub struct UserSignatureKeyPairId(String);

src/db/schema.rs

@@ -217,6 +217,22 @@ table! {
         api_key -> Nullable<Text>,
         avatar_color -> Nullable<Text>,
         external_id -> Nullable<Text>,
+        signed_public_key -> Nullable<Text>,
+        security_state -> Nullable<Text>,
+        security_version -> Nullable<Integer>,
+        v2_upgrade_token -> Nullable<Text>,
+    }
+}
+
+table! {
+    user_signature_key_pairs (uuid) {
+        uuid -> Text,
+        user_uuid -> Text,
+        signature_algorithm -> Integer,
+        signing_key -> Text,
+        verifying_key -> Text,
+        created_at -> Timestamp,
+        updated_at -> Timestamp,
     }
 }
 
@@ -382,6 +398,7 @@ joinable!(collections_groups -> groups (groups_uuid));
 joinable!(event -> users_organizations (uuid));
 joinable!(auth_requests -> users (user_uuid));
 joinable!(sso_users -> users (user_uuid));
+joinable!(user_signature_key_pairs -> users (user_uuid));
 
 allow_tables_to_appear_in_same_query!(
     archives,
@@ -408,4 +425,5 @@ allow_tables_to_appear_in_same_query!(
     collections_groups,
     event,
     auth_requests,
+    user_signature_key_pairs,
 );

src/http_client.rs

@@ -174,6 +174,27 @@ pub enum CustomHttpClientError {
 }
 
 impl CustomHttpClientError {
+    /// Attach the domain that resolved to this address, which `should_block_host()` can't know.
+    fn with_domain(self, name: &str) -> Self {
+        match self {
+            Self::NonGlobalIp {
+                ip,
+                ..
+            } => Self::NonGlobalIp {
+                domain: Some(name.to_owned()),
+                ip,
+            },
+            Self::Blocked {
+                domain,
+            } => Self::Blocked {
+                domain: format!("{name} ({domain})"),
+            },
+            other @ Self::Invalid {
+                ..
+            } => other,
+        }
+    }
+
     pub fn downcast_ref(e: &dyn std::error::Error) -> Option<&Self> {
         let mut source = e.source();
 
@@ -285,14 +306,12 @@ fn pre_resolve(name: &str, enforce_block: bool) -> Result<(), CustomHttpClientEr
 }
 
 fn post_resolve(name: &str, ip: IpAddr) -> Result<(), CustomHttpClientError> {
-    if should_block_ip(ip) {
+    let host: Host<&str> = match ip {
-        Err(CustomHttpClientError::NonGlobalIp {
+        IpAddr::V4(ip) => Host::Ipv4(ip),
-            domain: Some(name.to_owned()),
+        IpAddr::V6(ip) => Host::Ipv6(ip),
-            ip,
+    };
-        })
+
-    } else {
+    should_block_host(&host).map_err(|e| e.with_domain(name))
-        Ok(())
-    }
 }
 
 impl Resolve for CustomDns {

src/mail.rs

@@ -307,9 +307,18 @@ pub async fn send_invite(
         if CONFIG.sso_enabled() && CONFIG.sso_only() {
             query_params.append_pair("orgSsoIdentifier", &org_id);
         }
-        if user.private_key.is_some() {
+
-            query_params.append_pair("orgUserHasExistingUser", "true");
+        // The web vault requires both of these parameters to be present.
-        }
+        // If either is missing it rejects the invite client-side, before any
+        // request reaches the server, showing only "Unable to accept invitation".
+        query_params.append_pair("initOrganization", "false");
+
+        let org_user_has_existing_user = if user.private_key.is_some() {
+            "true"
+        } else {
+            "false"
+        };
+        query_params.append_pair("orgUserHasExistingUser", org_user_has_existing_user);
     }
 
     let Some(query_string) = query.query() else {

src/main.rs

@@ -2,7 +2,7 @@
 // The recursion_limit is mainly triggered by the json!() macro.
 // The more key/value pairs there are the more recursion occurs.
 // We want to keep this as low as possible!
-#![recursion_limit = "165"]
+#![recursion_limit = "192"]
 
 // When enabled use MiMalloc as malloc instead of the default malloc
 #[cfg(feature = "enable_mimalloc")]

src/ratelimit.rs

@@ -18,6 +18,24 @@ static LIMITER_ADMIN: LazyLock<Limiter> = LazyLock::new(|| {
     RateLimiter::keyed(Quota::with_period(seconds).expect("Non-zero admin ratelimit seconds").allow_burst(burst))
 });
 
+static LIMITER_UNAUTHENTICATED: LazyLock<Limiter> = LazyLock::new(|| {
+    let seconds = Duration::from_secs(CONFIG.unauthenticated_ratelimit_seconds());
+    let burst = NonZeroU32::new(CONFIG.unauthenticated_ratelimit_max_burst())
+        .expect("Non-zero unauthenticated ratelimit burst");
+    RateLimiter::keyed(
+        Quota::with_period(seconds).expect("Non-zero unauthenticated ratelimit seconds").allow_burst(burst),
+    )
+});
+
+pub fn check_limit_unauthenticated(ip: &IpAddr) -> Result<(), Error> {
+    match LIMITER_UNAUTHENTICATED.check_key(ip) {
+        Ok(()) => Ok(()),
+        Err(_e) => {
+            err_code!("Too many requests", 429);
+        }
+    }
+}
+
 pub fn check_limit_login(ip: &IpAddr) -> Result<(), Error> {
     match LIMITER_LOGIN.check_key(ip) {
         Ok(()) => Ok(()),

src/sso_client.rs

@@ -95,7 +95,9 @@ impl<'c> AsyncHttpClient<'c> for OidcHttpClient {
             }
 
             let body = response.bytes().await.map_err(Box::new)?;
+            if CONFIG.sso_debug_tokens() {
                 debug!("Response body {}", String::from_utf8_lossy(&body));
+            }
             builder.body(body.to_vec()).map_err(HttpClientError::Http)
         })
     }

src/static/templates/scss/vaultwarden.scss.hbs

@@ -116,8 +116,8 @@ app-security > app-two-factor-setup > form {
 }
 
 /* Hide unsupported Custom Role options */
-bit-dialog div.tw-ml-4:has(bit-form-control input),
+:is(bit-dialog, [bit-dialog]) div.tw-ml-4:has(bit-form-control input),
-bit-dialog div.tw-col-span-4:has(input[formcontrolname*="access"], input[formcontrolname*="manage"]) {
+:is(bit-dialog, [bit-dialog]) div.tw-col-span-4:has(input[formcontrolname*="access"], input[formcontrolname*="manage"]) {
   @extend %vw-hide;
 }