Server-side Request Forgery (SSRF) Affecting crawl4ai package, versions [,0.9.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

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 applications

Snyk Learn

Learn about Server-side Request Forgery (SSRF) vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-PYTHON-CRAWL4AI-17661145
  • published28 Jun 2026
  • disclosed18 Jun 2026
  • creditseankohjs

Introduced: 18 Jun 2026

New CVE NOT AVAILABLE CWE-918  (opens in a new tab)

How to fix?

Upgrade Crawl4AI to version 0.9.0 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 handle_stream_crawl_request process. An attacker can access internal-only services and cloud-metadata endpoints by sending crafted requests to the affected API endpoints, causing the server to fetch and stream responses from arbitrary internal URLs.

References

CVSS Base Scores

version 4.0
version 3.1