SSRF in Unclecode Crawl4ai
CVE-2026-109238
Crawl4AI 0.7.0 before 0.9.4 contains a server-side request forgery vulnerability that allows API clients to reach internal addresses by enabling link_preview_config on /crawl requests. Attackers can supply a controlled page with include_external and include_patterns set, causing AsyncUrlSeeder to fetch internal, private, and cloud-metadata links and return their parsed head data.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/unclecode/crawl4ai/security/advisories/GHSA-wh5w-hmj3-vgg7 (vendor-advisory)
- www.vulncheck.com/advisories/crawl4ai-0.7.0-before-0.9.4-ssrf-via-link-preview-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109238?
- CVE-2026-109238 is a high-severity vulnerability in Unclecode Crawl4ai, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-10-12.
- How severe is CVE-2026-109238?
- High severity. CVSS v3 base score is 8.6 out of 10.