CVE-2026-56266
HIGHCrawl4AI - Server-Side Request Forgery via Direct Crawl Endpoints
Title source: cnaDescription
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.
References (3)
Core 3
Core References
Product product
https://github.com/unclecode/crawl4ai
Vendor Advisory vendor-advisory
https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg
Third Party Advisory third-party-advisory
VulnCheck Advisory: Crawl4AI - Server-Side Request Forgery via Direct Crawl Endpoints
https://www.vulncheck.com/advisories/crawl4ai-server-side-request-forgery-via-direct-crawl-endpoints
Scores
CVSS v3
8.6
EPSS
0.0028
EPSS Percentile
19.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-918
Status
published
Products (4)
Crawl4AI/Crawl4AI
< 0.8.7
Crawl4AI/Crawl4AI
0.8.7
kidocode/crawl4ai
< 0.8.7
pypi/crawl4ai
0 - 0.8.7PyPI
Published
Jun 22, 2026
Tracked Since
Jun 23, 2026