Description (CNA)
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, the unauthenticated POST /oauth/backchannel-logout handler in backend/open_webui/utils/oauth.py fetched the OIDC discovery document and signing keys before validating a submitted logout token. Each request repeated uncached network fetches, and the signing-key lookup blocked the async event loop, so requests carrying invalid tokens could stall the single-worker instance and amplify traffic to the identity provider when ENABLE_OAUTH_BACKCHANNEL_LOGOUT was enabled. This issue is fixed in version 0.11.1.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| open-webui / open-webui | affected >= 0.9.0, < 0.11.1 |
CWE
CWE-405, CWE-770
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-3g9q-v48f-hh9w
- https://github.com/open-webui/open-webui/commit/aeda6ff13a25d3b3ba1b303609f35382db22142c
- https://github.com/open-webui/open-webui/releases/tag/v0.11.1
ADP enrichment
No English description supplied.