Description
Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.9, the Docker API server applied its SSRF destination check to the crawl target URL only, not to the proxy address. An unauthenticated request could supply a proxy pointing at an internal IP and route the browser through it, reaching internal services and cloud-metadata endpoints, while using a perfectly valid crawl URL. The Docker API is unauthenticated by default. /crawl, /crawl/stream, and /crawl/job accept a browser_config (and crawler_config). The following all feed Chromium's egress and were unchecked: browser_config.proxy_config.server, browser_config.proxy (deprecated field), crawler_config.proxy_config.server, and --proxy-server / --proxy-pac-url / --proxy-bypass-list / --host-resolver-rules flags in browser_config.extra_args. This vulnerability is fixed in 0.8.9.
Severity (CVSS)
| Base score | 8.6 |
|---|---|
| Severity | High |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N |
| Provided by | CNA |
Weaknesses
- CWE-918 — CWE-918: Server-Side Request Forgery (SSRF)
Affected products
| Vendor | Product | Versions |
|---|---|---|
| unclecode | crawl4ai | < 0.8.9 |
References
- https://github.com/unclecode/crawl4ai/security/advisories/GHSA-6qhc-x826-342c (x_refsource_CONFIRM)
Generated from the official CVE List on 24 Jun 2026 09:35 UTC.