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.
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Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 12 Oct 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Open WebUI 0.11.0 before 0.11.4 ReDoS via grep_knowledge_files Event Loop | |
| First Time appeared |
Openwebui
Openwebui open Webui |
|
| Weaknesses | CWE-1333 | |
| CPEs | cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Openwebui
Openwebui open Webui |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-12T16:04:54.739Z
Reserved: 2026-10-12T14:12:52.833Z
Link: CVE-2026-109295
No data.
Status : Received
Published: 2026-10-12T17:17:22.950
Modified: 2026-10-12T17:17:22.950
Link: CVE-2026-109295
No data.
OpenCVE Enrichment
Updated: 2026-10-12T18:15:15Z
Weaknesses