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Advisories

Crawl4AI 0.7.0 before 0.9.5 ReDoS via /crawl Regex Fields

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Severity
high
Date
Affecting

  • crawl4ai >= 0.7.0, < 0.9.5

CWE
  • CWE-1333 Inefficient Regular Expression Complexity
CVSS
7.1
CVSS V4 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
Credit
Zhixi Sun (manus-use), Siyang Wu
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.

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