GitStock

unclecode/crawl4ai · Security

Crawl4AI Has Local File Inclusion in Docker API via file:// URLs

GHSA ID
GHSA-vx9w-5cx4-9796
CVE ID
CVE-2026-26217
Severity
critical
Published
Updated
CVSS
8.6 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v3
8.6 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4
9.2 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Description

A local file inclusion vulnerability exists in the Crawl4AI Docker API. The /execute_js, /screenshot, /pdf, and /html endpoints accept file:// URLs, allowing attackers to read arbitrary files from the server filesystem.

Attack Vector:

POST /execute_js
{
    "url": "file:///etc/passwd",
    "scripts": ["document.body.innerText"]
}

Impact

An unauthenticated attacker can:

  • Read sensitive files (/etc/passwd, /etc/shadow, application configs)
  • Access environment variables via /proc/self/environ
  • Discover internal application structure
  • Potentially read credentials and API keys

Workarounds

  1. Disable the Docker API
  2. Add authentication to the API
  3. Use network-level filtering

CWEs

  • CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References

Open GitHub