Description
Open WebUI from 0.11.0 before 0.11.4 contains a regular expression denial of service vulnerability that allows authenticated users to stall server workers via file search patterns. Attackers can instruct the model to call grep_knowledge_files or grep_chat_files with a catastrophically backtracking regex, blocking the event loop for two seconds per repeated call.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| open-webui | open-webui | 0.11.0 – < 0.11.4 | 0.11.4 |
References
- GitHub Security Advisory (GHSA-gfjp-5hc9-852r) vendor-advisory
- VulnCheck Advisory: Open WebUI 0.11.0 before 0.11.4 ReDoS via grep_knowledge_files Event Loop third-party-advisory