{"id":"CVE-2026-115508","state":"PUBLISHED","title":"Crawl4AI 0.7.0 before 0.9.5 ReDoS via /crawl Regex Fields","description":"Crawl4AI 0.7.0 before 0.9.5 contains an inefficient regular expression complexity vulnerability in the Docker API server that allows authenticated API clients to supply unbounded regular expressions in /crawl request bodies. Attackers can submit catastrophic-backtracking patterns via RegexExtractionStrategy.custom, RegexChunking.patterns or JsonCss, JsonXPath and JsonLxml schema regex fields against a crafted page to freeze the entire server, including /health.","publishedAt":"2026-10-22T19:14:07.893Z","updatedAt":"2026-10-29T02:36:22.691Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["unclecode crawl4ai"],"affected":[{"vendor":"unclecode","product":"crawl4ai","packageURL":"pkg:pypi/crawl4ai","defaultStatus":"unaffected","versions":[{"version":"0.7.0","status":"affected","lessThan":"0.9.5","versionType":"semver"},{"version":"0.9.5","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/unclecode/crawl4ai/security/advisories/GHSA-j843-8p47-rhxp","https://github.com/unclecode/crawl4ai/commit/8aea2006e2cdb96a185e50b20633fc323dff6429","https://github.com/unclecode/crawl4ai/releases/tag/v0.9.5","https://github.com/unclecode/crawl4ai","https://www.vulncheck.com/advisories/crawl4ai-0.7.0-before-0.9.5-redos-via-crawl-regex-fields"],"weaknesses":["CWE-1333"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/115xxx/CVE-2026-115508.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-115508","state":"PUBLISHED","datePublished":"2026-10-22T19:14:07.893Z","dateUpdated":"2026-10-29T02:36:22.691Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-22T16:15:00.201Z"},"containers":{"cna":{"title":"Crawl4AI 0.7.0 before 0.9.5 ReDoS via /crawl Regex Fields","descriptions":[{"lang":"en","value":"Crawl4AI 0.7.0 before 0.9.5 contains an inefficient regular expression complexity vulnerability in the Docker API server that allows authenticated API clients to supply unbounded regular expressions in /crawl request bodies. Attackers can submit catastrophic-backtracking patterns via RegexExtractionStrategy.custom, RegexChunking.patterns or JsonCss, JsonXPath and JsonLxml schema regex fields against a crafted page to freeze the entire server, including /health."}],"affected":[{"vendor":"unclecode","product":"crawl4ai","packageURL":"pkg:pypi/crawl4ai","defaultStatus":"unaffected","versions":[{"version":"0.7.0","status":"affected","lessThan":"0.9.5","versionType":"semver"},{"version":"0.9.5","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/unclecode/crawl4ai/security/advisories/GHSA-j843-8p47-rhxp","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-j843-8p47-rhxp)"},{"url":"https://github.com/unclecode/crawl4ai/commit/8aea2006e2cdb96a185e50b20633fc323dff6429","tags":["patch"]},{"url":"https://github.com/unclecode/crawl4ai/releases/tag/v0.9.5","tags":["release-notes"],"name":"crawl4ai v0.9.5 Release Notes"},{"url":"https://github.com/unclecode/crawl4ai","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/crawl4ai-0.7.0-before-0.9.5-redos-via-crawl-regex-fields","name":"VulnCheck Advisory: Crawl4AI 0.7.0 before 0.9.5 ReDoS via /crawl Regex Fields","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1333","lang":"en","description":"Inefficient Regular Expression Complexity","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-22T19:14:07.893Z"},"datePublic":"2026-10-02T00:00:00.000Z","credits":[{"lang":"en","value":"Zhixi Sun (manus-use)","type":"finder"},{"lang":"en","value":"Siyang Wu","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/unclecode/crawl4ai/security/advisories/GHSA-j843-8p47-rhxp","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-29T02:35:54.130520Z","id":"CVE-2026-115508","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-29T02:36:22.691Z"}}]}}}