SSRF in Kidocode Crawl4ai
CVE-2026-57573
Crawl4AI is an open-source LLM-friendly web crawler and scraper. Prior to 0.9.0, the Docker API server applied its SSRF destination check on the non-streaming /crawl path but not on the streaming path. handle_stream_crawl_request passed seed URLs straight to the crawler with no destination validation, allowing a remote unauthenticated client to call POST /crawl/stream or POST /crawl with crawler_config.stream=true with a URL pointing at an internal, private, or link-local address; the server fetched it and streamed the response body back. This issue is fixed in version 0.9.0.
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: 0.004 (36.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Kidocode Crawl4ai
- Unclecode Crawl4ai — versions < 0.9.0
Weakness classification (CWE)
References
- github.com/unclecode/crawl4ai/security/advisories/GHSA-wm69-2pc3-rmmf (Mitigation, Vendor Advisory)
- github.com/unclecode/crawl4ai/commit/60886d1a0c52682e4c83a7cef9dfac417fff6bd2 (Patch)
Frequently asked questions
- What is CVE-2026-57573?
- CVE-2026-57573 is a high-severity vulnerability in Kidocode Crawl4ai, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-07-06.
- How severe is CVE-2026-57573?
- High severity. CVSS v3 base score is 8.6 out of 10.