CVE-2026-87506: Execution with Unnecessary Privileges

Privilege elevation in WebUI in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. Chromium security severity: Medium...

CVE-2026-87498: Missing Authorization

Missing authorization in WebUI in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. Chromium security severity: High...

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-2026-87011: Asymmetric Resource Consumption (Amplification)

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/openwebui/utils/oauth.py fetched the OIDC discovery document and signing keys before validating a submitted logout...

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-2026-87015: Insertion of Sensitive Information Into Sent Data

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 until 0.11.1, backend/openwebui/utils/tools.py captured a cookie jar from the enclosing connection loop instead of binding it to each external tool callable. When multiple tool servers were attached...

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...

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-2026-87999: 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...

Linux Distros Unpatched Vulnerability : CVE-2026-87506

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Privilege elevation in WebUI in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to potentially execute...

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-2026-87016: 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-2026-88002: Loop with Unreachable Exit Condition

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.5.0 until 0.11.1, the message-chain reconstruction helper in backend/openwebui/utils/misc.py advanced through a chat history by map key but tracked visited entries using each message body's optional id...

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-2026-89175

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...

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...

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-2026-87584: Incorrect Authorization

Incorrect authorization in WebUI in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions into a privileged page via a crafted HTML page. Chromium security severity: Medium...

Linux Distros Unpatched Vulnerability : CVE-2026-87584

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Incorrect authorization in WebUI in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions into a privileged page v...

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...