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-2026-87498: 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...

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-2026-89168

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.7.0 through 0.11.0 Description The built-in knowledge search tool fails to properly restrict access to knowledge bases when using specific vector backends. While the tool identifies which knowledge bases a user is permitt...

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...

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...

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-2026-87584: 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...

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...

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-2026-87015: 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-2026-87013: 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-2026-87011: 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...

GHSA-XRQW-3RRV-VX5W vulnerabilities

Vulnerabilities for packages: open-webui...

CVE-2026-9856 vulnerabilities

Vulnerabilities for packages: open-webui...

GHSA-4MVJ-M6J5-PMF7 vulnerabilities

Vulnerabilities for packages: open-webui...

CVE-2026-71428 vulnerabilities

Vulnerabilities for packages: open-webui...

PT-2026-88598

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 153.0.8010.36 Description Missing authorization in the WebUI allows a remote attacker who has compromised the renderer process to bypass the web origin policy using a crafted HTML page. The web origin policy is ...

PT-2026-88606

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 153.0.8010.36 Description A privilege elevation issue exists in the WebUI. A remote attacker who has already compromised the renderer process can potentially execute arbitrary code outside the sandbox by using a...

PT-2026-88684

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 153.0.8010.36 Description Incorrect authorization in the WebUI allows a remote attacker to bypass system access restrictions to reach a privileged page by using a crafted HTML page. Recommendations Update Google...