CVE-2026-56266

Crawl4AI - Server-Side Request Forgery via Direct Crawl Endpoints

State: Published
Severity: 9.2 Critical
Published: Jun 22, 2026
Updated: Jul 14, 2026
Reserved: Jun 20, 2026

Description

Crawl4AI before 0.8.7 contains a server-side request forgery vulnerability in the /crawl, /crawl/stream, /md, and /llm endpoints that fetch arbitrary user-supplied URLs without validation. Unauthenticated attackers can bypass the internal-address blocklist using IPv6-mapped IPv4 addresses to reach internal services and cloud metadata endpoints.

Scores

CVSS	Score	Vector	Source
4.0	9.2 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N	VulnCheck
3.1	8.6 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N	VulnCheck

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
Crawl4AICrawl4AI	before 0.8.7Affected 0.8.7Not affected

References

https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfgvendor-advisory
https://github.com/unclecode/crawl4aiproduct
VulnCheck Advisory: Crawl4AI - Server-Side Request Forgery via Direct Crawl Endpointsthird-party-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.