{"schema":"threatline.record/2","record":{"id":"CVE-2026-109295","aliases":["GHSA-gfjp-5hc9-852r"],"summary":"Open WebUI 0.11.0 before 0.11.4 ReDoS via grep_knowledge_files Event Loop","details":"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.","categories":["Unclassified"],"product":"open-webui","vendor":"open-webui","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109295","source_modified_at":"2026-10-23T21:57:57.327Z","fetched_at":"2026-10-23T22:01:05.715934Z","product":"open-webui","vendor":"open-webui","versions":[{"version":"0.11.0","status":"affected","versionType":"semver","lessThan":"0.11.4"},{"version":"0.11.4","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109295","source_modified_at":"2026-10-23T21:57:57.327Z","fetched_at":"2026-10-23T22:01:05.715934Z","package":{"name":"open-webui","ecosystem":null},"version":"0.11.4","basis":"first unaffected version stated in the CVE record"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00307,"percentile":0.22289,"score_date":"2026-10-23"},"published_at":"2026-10-12T16:04:54.739Z","modified_at":"2026-10-23T21:57:57.327Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-109295","fetched_at":"2026-10-23T22:01:05.715934Z","source_modified_at":"2026-10-23T21:57:57.327Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109295","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-gfjp-5hc9-852r","tags":["exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/open-webui-0.11.0-before-0.11.4-redos-via-grep-knowledge-files-event-loop","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-13T18:08:41.758895Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-23T21:57:57.327Z","content_hash":"e4afc4286a62367761253ef44c9a9b898233c7d1acd5509deb8f696013f5a3c9"}}