Server-side Request Forgery (SSRF) Affecting crawl4ai package, versions [,0.8.9)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Server-side Request Forgery (SSRF) vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-PYTHON-CRAWL4AI-17661142
- published28 Jun 2026
- disclosed16 Jun 2026
- creditUnknown
Introduced: 16 Jun 2026
NewCVE-2026-53755 (opens in a new tab)How to fix?
Upgrade Crawl4AI to version 0.8.9 or higher.
Overview
Crawl4AI is a 🚀🤖 Crawl4AI: Open-source LLM Friendly Web Crawler & scraper
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the proxy_config.server parameter in the browser_config or crawler_config objects, as well as related proxy settings in extra_args. An attacker can access internal services and cloud-metadata endpoints by supplying a proxy address pointing to internal IPs, causing the server to route requests through attacker-controlled proxies and return sensitive responses.
Workaround
This vulnerability can be mitigated by enabling authentication (CRAWL4AI_API_TOKEN) or restricting the container's outbound network access (egress firewall / no metadata route).