PT-2026-89162

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.6.27 through 0.11.0 Description An issue exists in the tool loading routine within backend/open webui/utils/tools.py where a cookie jar is captured from the enclosing connection loop instead of being bound to each externa...

CVE-2026-87999: Server-Side Request Forgery (SSRF)

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.1, POST /api/v1/retrieval/process/web and POST /api/v1/retrieval/process/web/search in backend/openwebui/retrieval/web/utils.py treated Python's globally routable address classification as proof th...

PT-2026-89171

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.5 through 0.11.0 Description An issue exists in the channel branch of the chat completions handler where the system verifies if a user has write access to a channel and if a specific message belongs to that channel, but...

PT-2026-89173

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.6 through 0.11.0 Description An issue exists in the SafePlaywrightURLLoader component within backend/open webui/retrieval/web/utils.py affecting both sync and async request interceptors. The system validates a...

CVE-2026-87012: Improper Check for Unusual or Exceptional Conditions

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, backend/openwebui/models/calendar.py stored the calendar event meta.alertminutes value without type validation and the shared upcoming-event scheduler compared that value numerically. An...

CVE-2026-87997: Authorization Bypass Through User-Controlled Key

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/chat/completions and POST /api/v1/chat/completions in backend/openwebui/main.py copied a client-supplied folderid into a new chat without applying the folder write-access chec...

PT-2026-89172

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.8.11 through 0.11.0 Description An issue exists where the in-app port preview renders content in an iframe sandbox that simultaneously grants allow-scripts and allow-same-origin. Because the terminal proxy serves this...

PT-2026-89176

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.11.1 Description An issue exists where the platform incorrectly identifies certain internal addresses as external by relying solely on Python's globally routable address classification. This allows an authenticat...

PT-2026-89167

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.6.41 through 0.11.0 Description On SQLite deployments, the lookup process mapping an external identity to a local account performs a substring match instead of an exact match. This occurs because the contains operator on...

PT-2026-89177

Summary Chat histories are stored as an unvalidated JSON object. After a message is deleted, the code that picks the chat's new current message walked down the childrenIds links without recording where it had already been. Any account with the default user role could store a chat whose messages...

CVE-2026-87014: Insufficient Session Expiration

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, role synchronization in backend/openwebui/routers/auths.py and backend/openwebui/utils/oauth.py updated an administrator's database role without invalidating the user record cached by...

CVE-2026-87013: Loop with Unreachable Exit Condition

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/v1/folders/id/update/parent allowed a user to place a folder under itself or one of its descendants, while the folder tree walks used by DELETE /api/v1/folders/id and POST...

CVE-2026-87017: Exposure of Sensitive Information to an Unauthorized Actor

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 until 0.11.1, the built-in knowledge search tool passed the caller's readable knowledge identifiers through a metadata filter, but the search methods in eleven shipped vector backends ignored that...

CVE-2026-87016: Improper Neutralization of Wildcards or Matching Symbols

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.41 until 0.11.1, getuserbyoauthsub and getuserbyscimexternalid in backend/openwebui/models/users.py used JSON contains matching that compiled to SQL LIKE substring matching on SQLite. An OAuth subject...

CVE-2026-87995: Improper Neutralization of Input During Web Page Generation

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.11 until 0.11.1, src/lib/components/chat/FileNav/PortPreview.svelte rendered terminal port content in an iframe sandbox containing both allow-scripts and allow-same-origin. Because the terminal proxy...

CVE-2026-87994: Authorization Bypass Through User-Controlled Key

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, the channel branch of chatcompletion in backend/openwebui/main.py checked channel write access and channel membership for a supplied messageid but did not verify that the calling user...

CVE-2026-87996: Time-of-check Time-of-use (TOCTOU) Race Condition

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.1, SafePlaywrightURLLoader in backend/openwebui/retrieval/web/utils.py validated a user-controlled hostname in Python and then let the Playwright browser resolve it again in the sync and...

CVE-2026-87998: Improper Privilege Management

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, DELETE /api/v1/knowledge/id/delete in backend/openwebui/routers/knowledge.py authorized deletion against the knowledge base but then removed its administrator-owned external connection...

CVE-2026-88000: Loop with Unreachable Exit Condition

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, DELETE /api/v1/chats/id/messages/messageid used the chat-history deletion helper in backend/openwebui/models/chats.py to follow childrenIds without recording visited message identifiers...

PT-2026-89175

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.10.0 through 0.11.0 Description An issue exists in the knowledge base delete handler where a non-administrator user with write access to an external knowledge base can delete the shared instance configuration. This occurs...