PT-2026-67838

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.0 through 0.10.0 Description Open WebUI fails to properly validate user-supplied URLs when checking if a destination is globally routable. The system applies ipaddress.is global to literal IPv6 addresses but does not...

PT-2026-67911

Summary Open WebUI lets a client define a model inline on a chat request instead of selecting a saved workspace model. The knowledge attached to such an inline model was used as-is, without checking that the caller can read what it points at. Any authenticated user who knows another user's file i...

PT-2026-67861

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.6 through 0.10.x Description The built-in knowledge search tools allow a chat participant to specify a pattern used to grep knowledge files. When patterns contain regex metacharacters, they are compiled using Python's...

PT-2026-67839

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.0 through 0.10.2 Description An issue exists where the terminal file-preview serveUrl iframe branch grants allow-same-origin and allow-scripts permissions for HTML files served from the application origin. This occurs...

PT-2026-67844

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.11.0 Description An authenticated attacker can bypass URL validation to perform a DNS rebinding attack. The software validates hostnames by resolving them once to reject private, loopback, and link-local addresse...

PT-2026-67859

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.11.0 Description Authenticated non-admin users with read-only access can obtain the full Python source code of server-side tools shared with them. This occurs because the response models permitted extra fields,...

PT-2026-67834

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.5.0 through 0.10.9 Description In standard channels, the message update and delete handlers fail to verify if the caller is the original author of the message. Since write access is the same permission required to post a...

PT-2026-67904

Summary DELETE /api/v1/chats/id cancelled a chat's in-flight tasks before it checked whether the caller was allowed to delete that chat. Any authenticated user who knew another user's chat id could therefore abort that user's running model response, title generation or tag generation. The deletio...

PT-2026-67836

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.6 through 0.10.2 Description An issue exists where the DELETE /api/v1/chats/id endpoint cancels in-flight tasks before verifying if the caller has the necessary permissions to delete the chat. An authenticated user who...

PT-2026-67857

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.0 through 0.10.0 Description Automation recurrence parsing in backend/open webui/utils/automations.py anchors minutely and hourly rules to a fixed date of 2000-01-01. When calculating the next run, the system walks...

PT-2026-67858

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.8.8 through 0.10.9 Description The terminal WebSocket route in backend/open webui/routers/terminals.py fails to apply the verified-user role gate that is enforced on HTTP terminal routes. Specifically, the resolve...

PT-2026-67924

Summary Open WebUI vetted user-supplied URLs by resolving the hostname once and rejecting private, loopback and link-local addresses, then let the HTTP client resolve that hostname again at connect time. An attacker who controls the authoritative DNS for a hostname they submit can answer with a...

CVE-2026-70494: Missing Authorization

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.0, the DELETE /api/v1/folders/id handler in backend/openwebui/routers/folders.py allowed a user granted write access to a shared chat folder to permanently delete chats and messages...

CVE-2026-70491: Exposure of Sensitive Information to an Unauthorized Actor

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. In 0.10.2 and earlier, the GET /api/v1/tools/, GET /api/v1/tools/list, and GET /api/v1/tools/id/id endpoints in backend/openwebui/routers/tools.py returned full Python tool source to authenticated non-admin...

CVE-2026-70488: Authorization Bypass Through User-Controlled Key

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the sync cleanup endpoint authorized write access to the knowledge base in the URL but then acted on directory and file ids supplied in the request body without checking that those objec...

CVE-2026-70485: Server-Side Request Forgery (SSRF)

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, Open WebUI checked whether a user-supplied URL destination was globally routable by applying ipaddress.isglobal to the literal IPv6 address without examining IPv4 addresses embedded in...

CVE-2026-70484: Missing Authorization

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 until 0.11.0, the legacy chat-completions features block trusted a client-supplied imagegeneration flag and did not re-check the features.imagegeneration permission that the direct image routes and...

CVE-2026-70481: Improper Access Control

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.5.0 until 0.11.0, the standard channel message update and delete handlers accepted any caller holding write access on the channel without checking that the caller wrote the message. Because write access i...

CVE-2026-70480: Server-Side Request Forgery (SSRF)

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.34 until 0.11.0, Open WebUI renders vega and vega-lite fenced code blocks in chat content by building a Vega view in the viewer browser without a restricted resource loader. Any user who can place such ...

PT-2026-67835

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.8.0 through 0.10.9 Description When the ENABLE OAUTH TOKEN EXCHANGE variable is set to True, the endpoint /oauth/provider/token/exchange also identified as POST /api/v1/auths/oauth/provider/token/exchange fails to verify...