CVE-2026-70493

creationtimestamp| type| source ---|---|--- 2026-08-04 22:35:03+00:00| published-proof-of-concept| https://github.com/open-webui/open-webui/security/advisories/GHSA-2f54-p244-32q6 2026-08-05 12:32:01+00:00| seen| https://gist.github.com/alon710/2d05301b2f45169422f4602c106418b3...

CVE-2026-70493 Open WebUI: Any authenticated user can stall a worker via a knowledge-search pattern that backtracks catastrophically

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the built-in knowledge search path in backend/openwebui/tools/knowledgefs.py and backend/openwebui/tools/builtin.py let a chat participant choose a pattern used to grep knowledge files...