CVE-2026-56266CWE-918

Crawl4AI - Server-Side Request Forgery via Direct Crawl Endpoints

Critical · published June 22, 2026

CVSS v4.0
9.2
EPSS
0%
Percentile
40.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.2 · CRITICAL
Vector
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
EPSS
0.00476 · 40.2th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-06-22T21:04Z
EPSS history
Timeline
  • 22 JUN 21:04Z
    Crawl4AI - Server-Side Request Forgery via Direct Crawl Endpoints
    cvelistv5