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Advisories

Crawl4AI before 0.9.5 Blind SSRF via CacheValidator Freshness Check

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Severity
medium
Date
Affecting

  • crawl4ai >= 0, < 0.9.5

CWE
  • CWE-918 Server-Side Request Forgery (SSRF)
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
arpe1618, ntohidi
Description
Crawl4AI before 0.9.5 contains a blind server-side request forgery vulnerability in the Docker server that allows API clients to bypass the egress proxy by enabling check_cache_freshness. Attackers can cache a controlled URL, then trigger CacheValidator to follow 302 redirects or DNS rebinding to internal and cloud-metadata addresses for port and service discovery.

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