SSRF in Crawl4ai
CVE-2026-56261
Crawl4AI before 0.8.7 contains a server-side request forgery (SSRF) vulnerability in the Docker API server's /crawl/job and /llm/job endpoints, which accept webhook URLs without destination validation. An attacker can supply webhook URLs pointing to private or internal IP ranges, Docker networks, or cloud metadata endpoints (e.g. 169.254.169.254), causing the server to make requests to internal services and potentially expose cloud metadata.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
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
EPSS: 0.005 (41.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Crawl4ai — versions 0, 0.8.7
- Kidocode Crawl4ai
Weakness classification (CWE)
References
- github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg (vendor-advisory, Mitigation, Vendor Advisory)
- github.com/unclecode/crawl4ai (Product, product)
- www.vulncheck.com/advisories/crawl4ai-server-side-request-forgery-via-webhook-u… (Product, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-56261?
- CVE-2026-56261 is a high-severity vulnerability in Crawl4ai, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-07-10.
- How severe is CVE-2026-56261?
- High severity. CVSS v3 base score is 8.6 out of 10.