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

🗓️ 04 Aug 2026 20:56:23Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 2 Views

Summary The built-in knowledge search tools let a chat participant choose the pattern used to grep knowledge files. Patterns containing regex metacharacters were compiled with Python's backtracking re engine and run against every line of every rea...

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04 Aug 2026 20:56Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.16.5
2