CVE-2026-109295
Medium · 4.3CVSS
4.3
EPSS
0.3%
Published
Oct 12, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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