CVE-2026-109295

6.5 MEDIUMpublic exploit available

Published 2026-10-12 · Updated 2026-10-15

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-1333

Public exploit & PoC references

https://github.com/open-webui/open-webui/security/advisories/GHSA-gfjp-5hc9-852r
https://github.com/open-webui/open-webui/security/advisories/GHSA-gfjp-5hc9-852r

All references

https://github.com/open-webui/open-webui/security/advisories/GHSA-gfjp-5hc9-852r
https://www.vulncheck.com/advisories/open-webui-0.11.0-before-0.11.4-redos-via-grep-knowledge-files-event-loop
https://github.com/open-webui/open-webui/security/advisories/GHSA-gfjp-5hc9-852r

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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