CVE-2026-115508
Crawl4AI 0.7.0 before 0.9.5 ReDoS via /crawl Regex Fields
- State
- Published
- Severity
- 7.1 High
- Published
- Oct 22, 2026
- Updated
- Oct 29, 2026
- Reserved
- Oct 22, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | 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 | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-1333 Inefficient Regular Expression Complexity
Affected Products
| Product | Versions |
|---|---|
crawl4aiunclecode |
|
References
- GitHub Security Advisory (GHSA-j843-8p47-rhxp)vendor-advisory
- https://github.com/unclecode/crawl4ai/commit/8aea2006e2cdb96a185e50b20633fc323dff6429patch
- crawl4ai v0.9.5 Release Notesrelease-notes
- https://github.com/unclecode/crawl4aiproduct
- VulnCheck Advisory: Crawl4AI 0.7.0 before 0.9.5 ReDoS via /crawl Regex Fieldsthird-party-advisory
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