CVE-2026-45398: Authorization Bypass Through User-Controlled Key

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, validatecollectionaccess checks the user-memory- and file- collection name prefixes but does not check knowledge base collections, which use raw UUIDs as collection names. Any...

Open WebUI's Insecure Direct Object Reference (IDOR) allows access to other users' memories

Summary Any authenticated user can read other users' private memories via /api/v1/retrieval/query/collection Details Vulnerability 1: Missing authorization in collection querying In backend/openwebui/routers/retrieval.py, the querycollectionhandler function accepts a list of collectionnames but...

CVE-2026-29071: Authorization Bypass Through User-Controlled Key

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.6, any authenticated user can read other users' private memories via /api/v1/retrieval/query/collection. Version 0.8.6 patches the issue...

Open WebUI 安全漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.8.6 contained a security vulnerability. This vulnerability stems from the/api/v1/retrieval/query/collection endpoint, which allows access to other users’ private...

PT-2026-28386

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.8.6 Description Open WebUI is a self-hosted artificial intelligence platform designed for offline operation. A flaw exists where any authenticated user can access private memories and files belonging to other...