CVE-2026-109239

Crawl4AI before 0.9.4 Blind SSRF via RobotsParser.can_fetch robots.txt Fetch

State: Published
Severity: 6.9 Medium
Published: Oct 12, 2026
Updated: Oct 13, 2026
Reserved: Oct 12, 2026

Description

Crawl4AI before 0.9.4 contains a blind server-side request forgery vulnerability in RobotsParser.can_fetch that lets unauthenticated attackers bypass Docker server egress controls. Attackers can enable check_robots_txt and use redirects or DNS rebinding to reach internal, loopback, or cloud-metadata addresses for service discovery.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	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	VulnCheck
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	VulnCheck

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
crawl4aiunclecode	before 0.9.4Affected 0.9.4Not affected

References

GitHub Security Advisory (GHSA-f77g-77vp-r96v)vendor-advisory
VulnCheck Advisory: Crawl4AI before 0.9.4 Blind SSRF via RobotsParser.can_fetch robots.txt Fetchthird-party-advisory

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