1767 matches found
EUVD-2026-75170
Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout...
Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout
Summary The OIDC back-channel logout endpoint is unauthenticated by design, because the identity provider calls it without a browser session. Before checking whether the submitted logout token was genuine, the handler fetched the provider's discovery document and its signing keys over the network...
EUVD-2026-75171
Open WebUI: Any authenticated user can suppress calendar alerts instance-wide via a non-numeric alert value...
Open WebUI: Any authenticated user can suppress calendar alerts instance-wide via a non-numeric alert value
Any authenticated user can suppress calendar alerts instance-wide via a non-numeric alert value Summary Calendar events carry a free-form meta object that is stored exactly as submitted, with no validation of the values inside it. The scheduler reads the per-event alert offset out of that object ...
EUVD-2026-75172
Open WebUI: Any authenticated user can start a non-terminating request via a folder parent cycle...
Open WebUI: Any authenticated user can start a non-terminating request via a folder parent cycle
Summary Any authenticated user can move one of their own folders under itself, leaving a loop in their folder tree. The re-parent endpoint performed no check that the new parent was not the folder itself or one of its own subfolders, and the folder tree walks did not track which folders they had...
Open WebUI: Admin demoted through SSO role sync keeps read and write access to all users' notes
Summary A user who is demoted from admin by an identity provider keeps admin-level read and write access to every user's notes, over any Socket.IO connection that was already open when the demotion happened. Open WebUI caches the user's role on the socket at connection time, and the two SSO...
EUVD-2026-75173
Open WebUI: Admin demoted through SSO role sync keeps read and write access to all users' notes...
Open WebUI: A user's session cookies are sent to tool servers configured for bearer authentication
Summary When more than one external tool server is reachable in the same request, a tool call to a server configured for bearer authentication can arrive carrying the calling user's Open WebUI session cookies alongside that server's own key. The cookie jar is built per connection, but the callabl...
EUVD-2026-75174
Open WebUI: A user's session cookies are sent to tool servers configured for bearer authentication...
EUVD-2026-75176
Open WebUI: Sign-in as another user via wildcard characters in the OAuth subject claim on SQLite...
Open WebUI: Sign-in as another user via wildcard characters in the OAuth subject claim on SQLite
Summary On SQLite deployments, the lookup that maps an external identity to a local account does a substring match instead of an exact match. A subject value containing SQL wildcard characters therefore matches accounts the value was never issued for, and the sign-in binds to whichever account th...
CVE-2026-87994
creationtimestamp| type| source ---|---|--- 2026-09-10 16:35:10+00:00| published-proof-of-concept| https://github.com/open-webui/open-webui/security/advisories/GHSA-fmqh-xp37-5hr8...
CVE-2026-88005
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.9.0, Open WebUI's OAuth token exchange endpoint issues a session for a provider access token without applying the email domain allowlist that the normal OAuth login callback enforces. An accou...
CVE-2026-88006
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.1, Open WebUI's OAuth token exchange endpoint issues a session for a provider access token without running the OAuth role management that the normal OAuth login callback runs. A user whose...
Open WebUI: Inaccessible knowledge bases are exposed through the built-in knowledge tool on most vector backends
Summary The built-in knowledge search tool returns knowledge bases the calling user has no access to. The tool works out which knowledge bases the caller may read and hands that set to the vector store as a search filter, and that filter is the only access control on the path. Most of the shipped...
EUVD-2026-75177
Open WebUI: Inaccessible knowledge bases are exposed through the built-in knowledge tool on most vector backends...
Open WebUI: Channel members can overwrite another member's message via the chat completions endpoint
Summary Any member of a channel who can post to it could also replace the text of a message written by a different member. The channel branch of the chat completions endpoint checked that the caller may write to the channel, and that the targeted message belongs to that channel, but never checked...