Medium 6.5Published Oct 22, 2026

CVE-2026-115508Crawl4AI 0.7.0 before 0.9.5 ReDoS via /crawl Regex Fields

Updated under an hour ago (Oct 27, 2026, 12:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for unclecode crawl4ai

Exploited in the last 30 days

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.

CVSS: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-1333
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 22, 2026
First seen by InfoSec Signals: Oct 22, 2026

Affected products

Affected products

unclecode crawl4ai unclecode:crawl4ai (from the name)	from 0.7.0 before 0.9.5; 0.9.5 not affected	CNA record

References

References

https://github.com/unclecode/crawl4ai/security/advisories/GHSA-j843-8p47-rhxp	vendor-advisory
https://github.com/unclecode/crawl4ai/commit/8aea2006e2cdb96a185e50b20633fc323dff6429	patch
https://github.com/unclecode/crawl4ai/releases/tag/v0.9.5	release-notes
https://github.com/unclecode/crawl4ai	product
https://www.vulncheck.com/advisories/crawl4ai-0.7.0-before-0.9.5-redos-via-crawl-regex-fields	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.