CVE-2026-53755— UncleCode Crawl4AI 服务端请求伪造漏洞

Crawl4AI: SSRF via proxy settings in the Docker server bypasses the crawl-URL SSRF check

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

服务端请求伪造(SSRF)

UncleCode Crawl4AI 服务端请求伪造漏洞

UncleCode Crawl4AI是新加坡UncleCode个人开发者的一款AI驱动的爬虫软件。 UncleCode Crawl4AI 0.8.9之前版本存在服务端请求伪造漏洞，该漏洞源于Docker API服务器的SSRF目标检查仅应用于爬取目标URL，而未应用于代理地址，可能导致未经验证攻击者通过提供指向内部IP的代理，路由浏览器访问内部服务和云元数据端点。

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