GHSA-8vh3-g2qg-2h2c (CVSS 9.1, CWE-306): POST /webhooks/nextcloud had no
authentication when WEBHOOK_SECRET was unset (the default). The receiver
trusted the attacker-supplied user.uid and fed it to Qdrant, letting an
unauthenticated network caller delete or re-index any user's vector
embeddings.
Webhooks now require WEBHOOK_SECRET end-to-end:
- app.py: the /webhooks/nextcloud route is only mounted when WEBHOOK_SECRET
is set; otherwise it 404s and a startup warning notes vector sync falls
back to the polling scanner.
- webhook_receiver.py: removed the warn-and-accept fallback. No secret -> 503,
missing/invalid bearer -> 401; the payload is never processed unauthenticated.
- webhook_routes.py / api/webhooks.py: webhook_auth_pair() raises
WebhookSecretNotConfigured instead of returning authMethod="none"; both
registration entry points return a clear 503 so no dead unauthenticated
webhooks are created.
Also expose webhooks availability to the Astrolabe UI via GET /api/v1/status
("webhooks_enabled": bool), set WEBHOOK_SECRET on the docker-compose
semantic-search dev services, and update env.sample + ADR-010 / ADR-018 /
webhook-management-guide docs.
Vector sync still works without a secret via the polling scanner.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The OAuth token-exchange deployment mode was removed (ADR-022) and has no
implementation — only a vestigial `enable_token_exchange` flag remains. Its
documentation still presented it as a usable mode, which misleads self-hosters.
The only supported deployment modes are single_user_basic, multi_user_basic,
and login_flow.
Token-exchange removals (how-to/config for a removed mode):
- delete docs/CRITICAL-TOKEN-EXCHANGE-PATTERN.md
- delete docs/oauth-architecture-comparison.md (orphaned; labelled the removed
pass-through mode as "current implementation")
- env.sample: drop the "OAUTH TOKEN EXCHANGE MODE" section
- docker-compose.yml: drop ENABLE_TOKEN_EXCHANGE/TOKEN_EXCHANGE_CACHE_TTL from
the keycloak service (dead flags)
- docs/webhook-management-guide.md: drop the token-exchange deployment section
- docs/configuration-migration-v2.md: drop the token-exchange migration scenario
- docs/observability.md: drop the never-emitted mcp_oauth_token_exchange_total
Auth ADR status corrections:
- ADR-004: Draft -> Superseded by ADR-022/ADR-023 (token-exchange/federated
design not adopted); note the three supported modes.
- ADR-002: extend the deprecation pointer to ADR-022/ADR-023.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DOCUMENT_CHUNK_SIZE/OVERLAP were documented as "words" with a 512/50
default; the implementation measures characters and defaults to 2048/200
(config.py, DocumentChunker). Update docs/configuration.md (config block,
tuning guidance, examples, env-var table) and env.sample accordingly, and
cross-reference DOCUMENT_CHUNK_PAGE_AWARE for the PDF path.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add PageAwareChunker, which splits paginated documents (PDFs) on page
boundaries first and only character-splits pages larger than chunk_size.
No chunk spans a page boundary, so page_number is always exact and stored
excerpts never lead with a neighbouring page's text. When chunk_size is at
least the largest page, this yields exactly one chunk per page: a
predictable vector count (== page count), a flat per-page embedding cost,
and zero cross-page overlap duplication.
Gated by DOCUMENT_CHUNK_PAGE_AWARE (default true). When false, the legacy
char-based DocumentChunker + post-hoc assign_page_numbers path runs
unchanged. Only doc_type="file" with page_boundaries (PDFs) takes the
page-aware path; notes/deck/news are unaffected.
Measured on a 15-page record (query "leadership award louis", target =
top-half of page 15): char-based degraded the target to dense-rank 10 at
cs=2048 (OCR) and mislabeled its page; page-aware restored rank 1 across
every fusion/modality and chunk size, with correct page labels and clean
snippets.
BREAKING CHANGE: PDFs are re-chunked page-aware by default. Existing
deployments will re-index PDF content on the next vector sync (different
chunk counts and page_number labels). Set DOCUMENT_CHUNK_PAGE_AWARE=false
to retain the previous char-based behaviour.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Same pattern as the ENABLE_LOGIN_FLOW removal in the previous commit:
the deployment mode (MCP_DEPLOYMENT_MODE) is the single source of truth
for selecting an auth flow. The ENABLE_MULTI_USER_BASIC_AUTH env-var
alias is redundant with `MCP_DEPLOYMENT_MODE=multi_user_basic`.
Unlike the ENABLE_LOGIN_FLOW removal — where silent removal was safe
because Login Flow v2 is the auto-detection default — silent removal
here would be a surprise: a user with only ENABLE_MULTI_USER_BASIC_AUTH=true
in their .env would auto-detect into LOGIN_FLOW after upgrade (wrong
runtime mode). Mitigation: detect_auth_mode now reads os.environ
directly for both legacy aliases and raises ValueError with a one-line
migration message if either is set. Applied retroactively to
ENABLE_LOGIN_FLOW as well — loud is better than silent.
- nextcloud_mcp_server/config.py:
- Drop the dynaconf env-var alias entry for ENABLE_MULTI_USER_BASIC_AUTH.
- Update the `enable_multi_user_basic_auth` field docstring to mark it
as derived / not user-settable.
- `_is_multi_user_mode()` (early-config helper, runs before Settings
is built) switched to checking MCP_DEPLOYMENT_MODE directly. Now
consistent with the canonical detection in detect_auth_mode.
- nextcloud_mcp_server/config_validators.py:
- Drop the auto-detection branch (`if settings.enable_multi_user_basic_auth`).
Selection of MULTI_USER_BASIC is now exclusively via the explicit
MCP_DEPLOYMENT_MODE branch.
- Add `enable_multi_user_basic_auth` to `_sync_derived_flags` alongside
`enable_login_flow` — both flags are now derived from the resolved mode.
- Drop `enable_multi_user_basic_auth` from
`MODE_REQUIREMENTS[MULTI_USER_BASIC].required` and from the
`forbidden` lists of SINGLE_USER_BASIC and LOGIN_FLOW (no longer
user input → no meaningful forbidden check).
- Add loud-deprecation `ValueError` block at the top of detect_auth_mode
that errors with a clear migration message when ENABLE_MULTI_USER_BASIC_AUTH
or ENABLE_LOGIN_FLOW is found in os.environ.
- tests/unit/test_config_validators.py:
- Switch ~10 fixtures from `enable_multi_user_basic_auth=True` to
`deployment_mode="multi_user_basic"` (mirrors `enable_login_flow`
treatment from the previous commit).
- Switch two `patch.dict(os.environ, {"ENABLE_MULTI_USER_BASIC_AUTH": "true"})`
blocks to use MCP_DEPLOYMENT_MODE.
- Rename `test_forbidden_multi_user_basic_auth` to
`test_forbidden_multi_user_basic_when_credentials_present` — the
scenario is now an explicit-mode + credentials conflict, not an
env-var-flag conflict.
- Add `test_legacy_enable_multi_user_basic_auth_env_var_errors` and
`test_legacy_enable_login_flow_env_var_errors` to exercise the new
loud-deprecation ValueError path.
- docker-compose.yml: mcp-multi-user-basic profile switched to
`MCP_DEPLOYMENT_MODE=multi_user_basic`.
- env.sample: replaced `#ENABLE_MULTI_USER_BASIC_AUTH=true` example with
`#MCP_DEPLOYMENT_MODE=multi_user_basic`.
- docs/authentication.md, configuration.md, troubleshooting.md,
auth-flows.md, webhook-management-guide.md,
configuration-migration-v2.md, ADR-025: replaced env-var examples
with the canonical MCP_DEPLOYMENT_MODE form.
- docs/ADR-020: marked partly superseded by ADR-022.
- CLAUDE.md: Multi-User BasicAuth section updated to set
MCP_DEPLOYMENT_MODE.
- nextcloud_mcp_server/vector/oauth_sync.py: module docstring updated.
BREAKING CHANGE: ENABLE_MULTI_USER_BASIC_AUTH is no longer read from
the environment, and setting it now raises a startup ValueError with
a migration message. Replace `ENABLE_MULTI_USER_BASIC_AUTH=true` with
`MCP_DEPLOYMENT_MODE=multi_user_basic`. The same loud-deprecation
check is also applied to the recently-removed ENABLE_LOGIN_FLOW —
replace with `MCP_DEPLOYMENT_MODE=login_flow` (or drop both;
`login_flow` is the auto-detect default when no other auth env vars
are set).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Once OAUTH_SINGLE_AUDIENCE was renamed to LOGIN_FLOW and the validation
gate ensured the only meaningful configuration was
`MCP_DEPLOYMENT_MODE=login_flow + ENABLE_LOGIN_FLOW=true`, the two
controls became redundant. Setting the mode is sufficient; the
ENABLE_LOGIN_FLOW env var doesn't add information.
This commit makes the deployment mode the single source of truth for
the Login Flow v2 toggle:
- `nextcloud_mcp_server/config.py`: drop the `ENABLE_LOGIN_FLOW`
dynaconf env-var alias. The `enable_login_flow` field stays as an
internal attribute so the 6 runtime call sites (app.py x4,
context.py, auth/scope_authorization.py) keep working unchanged.
Updated field docstring to flag it as derived.
- `nextcloud_mcp_server/config_validators.py`:
- Drop `enable_login_flow` from `MODE_REQUIREMENTS[LOGIN_FLOW].required`.
- Drop the validation gate that required ENABLE_LOGIN_FLOW=true for
LOGIN_FLOW mode (no longer possible to misconfigure — the flag is
derived, not user input).
- Add `_sync_derived_flags()` helper called at every return path of
`detect_auth_mode` to set `settings.enable_login_flow` from the
resolved mode.
- `tests/unit/test_config_validators.py`: drop `enable_login_flow=True`
from happy-path fixtures (no longer needed — detection sets it).
Repurpose `test_login_flow_requires_enable_login_flow_flag` into
`test_login_flow_mode_auto_derives_enable_login_flow_flag` which
asserts the new auto-derivation behaviour for both LOGIN_FLOW and a
non-LOGIN_FLOW mode.
- `docker-compose.yml`: remove `ENABLE_LOGIN_FLOW=true` from the
`mcp-login-flow` and `mcp-keycloak` profiles.
- `env.sample`: remove the ENABLE_LOGIN_FLOW reference; the comment
on `MCP_DEPLOYMENT_MODE` now notes the derived flag.
- `docs/configuration.md`, `docs/authentication.md`,
`docs/login-flow-v2.md`, `docs/auth-flows.md`,
`docs/troubleshooting.md`, `docs/ADR-025-*.md`: replace
ENABLE_LOGIN_FLOW=true examples and references with
MCP_DEPLOYMENT_MODE=login_flow.
BREAKING CHANGE: `ENABLE_LOGIN_FLOW` is no longer read from the
environment. Anyone who relied on `ENABLE_LOGIN_FLOW=true` to activate
Login Flow v2 should set `MCP_DEPLOYMENT_MODE=login_flow` instead (or
rely on it being the default when no other auth env vars are set).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Follow-up to the LOGIN_FLOW rename. The user-facing surface area —
env.sample, docker-compose.yml mcp-login-flow profile, migration
guide, ADR statuses, and the running.md boot-log examples — all need
to refer to `login_flow` rather than the deprecated
`oauth_single_audience` string.
- docker-compose.yml: add explicit MCP_DEPLOYMENT_MODE=login_flow to
the mcp-login-flow profile (no longer relying on auto-detection).
- env.sample: update the deployment-mode list and example, dropping
the removed `oauth_token_exchange` and pointing at ADR-022 for the
rename rationale.
- docs/ADR-022: flip Status to Accepted with a note that this PR
implements step 1 (rename + validation gate).
- docs/ADR-021: note that it has been partly superseded by ADR-022
(the oauth_single_audience naming is no longer accurate); cross-link.
- docs/ADR-025: drop oauth_single_audience/keycloak from the dynaconf
validator example and the [oauth_single_audience] TOML section.
- docs/configuration-migration-v2.md: bulk-replace oauth_single_audience
→ login_flow throughout (sed -i).
- docs/running.md: re-collapse the per-mode boot-log subsections (added
during the closed PR #786 workaround) back into a uniform
"<mode>"-substitution block — now correct after this PR's logging
cleanup at app.py:1172.
No code changes in this commit.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Pre-launch hardening for the hosted Astrolabe Cloud offering. Addresses
all five findings raised in #626 (Tim Kaufmann, code review of v0.65.0).
Re-verified against master before fixing.
Finding 3 (LLM-controllable user_id) — drop user_id from the public
signatures of provision_nextcloud_access, revoke_nextcloud_access,
check_provisioning_status, check_logged_in. Tool wrappers now always
derive identity from the verified AccessToken; user_id is no longer
accepted as MCP input. Adds parameterized CI-guard test that locks the
schema.
Finding 2 (predictable session cookie) — replace mcp_session=<user_id>
cookie with a cryptographically random session_id mapped server-side
(new browser_sessions table, alembic 005). Cookie value is opaque,
expires, revocable. SessionAuthBackend looks up user_id via the new
mapping and additionally requires a refresh token to fail closed.
Finding 4 (logout doesn't revoke refresh token) — oauth_logout now
calls the IdP revocation_endpoint (RFC 7009) when advertised, deletes
the stored refresh token regardless, and clears the browser_sessions
row. Cleanup is best-effort: logout always 302s.
Finding 1 (unverified ID token decodes) — verify_id_token helper does
JWKS signature + issuer + audience + exp + nonce checks per OIDC core
3.1.3.7. Used by both OAuth callback handlers (browser + MCP). Removes
the four "verify_signature: False" decodes that previously trusted IdP
claims unconditionally. Drops dead-code _validate_token_audience in
token_broker. Refactors token_utils + provisioning_decorator to read
user_id from the verified AccessToken instead of re-decoding the JWT.
Finding 5 (hardcoded Fernet keys in docker-compose.yml) — replace the
three inline TOKEN_ENCRYPTION_KEY values with required env var
interpolation; document in env.sample.
Test coverage: 4 new unit test modules (signature pinning, browser
sessions, ID-token verification, logout + revoke + session backend).
693 unit tests pass; ruff/format/ty clean.
Migration note: existing browser admin-UI sessions become invalid on
rollout (cookies are looked up against the new browser_sessions table,
which starts empty). Users re-login. MCP API access is unaffected.
Tracked on Astrolabe Cloud POC board card #37.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Both auth surfaces now fail-closed by default:
- ALLOWED_MCP_CLIENTS: removed the silent `claude-desktop` and
`test-mcp-client` fallbacks. Empty/unset env var leaves the registry
empty so /oauth/authorize rejects every client_id.
- ALLOWED_MGMT_CLIENT (new): comma-separated list of OIDC client_ids
whose tokens are accepted by /api/management/*. Enforced in
verify_token_for_management_api on both the cache-hit and cache-miss
paths against the token's client_id claim. Unset/empty rejects all.
Compose: set ALLOWED_MGMT_CLIENT=nextcloudMcpServerUIPublicClient on
mcp-multi-user-basic so the existing Astrolabe integration test
(test_astrolabe_chunk_context.py) still passes.
env.sample documents both vars and notes they may be consolidated later.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Smithery is no longer a supported deployment mode. Remove all Smithery-specific
code paths, middleware, configuration, and tests. This simplifies the codebase
by eliminating DeploymentMode enum, SmitheryConfigMiddleware, session config
context variables, and the smithery_main entrypoint.
Files deleted: Dockerfile.smithery, smithery.yaml, smithery_main.py
ADR-016 retained with deprecated status for historical reference.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add NEXTCLOUD_VERIFY_SSL and NEXTCLOUD_CA_BUNDLE env vars to configure
TLS certificate verification for all outbound Nextcloud connections.
Centralizes SSL config via a new HTTP client factory (http.py) used by
all 27 Nextcloud-bound call sites, including API clients, OIDC endpoints,
OAuth flows, and health checks.
Closes#560
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Token Broker Service manages Nextcloud access tokens with audience validation
- Implements short-lived token caching (5-minute TTL) with early refresh
- Enhanced token storage schema with ADR-004 fields (flow_type, audience, provisioning)
- MCP provisioning tools for explicit Flow 2 resource authorization
- Comprehensive unit tests for Token Broker Service (14 tests, all passing)
- Environment configuration for Progressive Consent mode
This implements the foundation for the dual OAuth flow architecture where:
- Flow 1: MCP clients authenticate to MCP server (aud: "mcp-server")
- Flow 2: MCP server gets delegated Nextcloud access (aud: "nextcloud")
Users must explicitly call provision_nextcloud_access tool to grant resource access,
implementing the "stateless by default" principle from ADR-004.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
