Headline
GHSA-vx9w-5cx4-9796: Crawl4AI Has Local File Inclusion in Docker API via file:// URLs
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
- Disable the Docker API
- Add authentication to the API
- Use network-level filtering
Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.