Crawl4AI versions prior to 0.8.0 contain a remote code execution vulnerability in the Docker API deployment. The /crawl endpoint accepts a hooks parameter containing Python code that is executed using exec(). The __import__ builtin was included in the allowed builtins, allowing unauthenticated remote attackers to import arbitrary modules and execute system commands.
Successful exploitation allows full server compromise, including arbitrary command execution, file read and write access, sensitive data exfiltration, and lateral movement within internal networks.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/unclecode/crawl4ai/blob/main/docs/blog/release-v0.8.0.md
disclosure@vulncheck.com
https://github.com/unclecode/crawl4ai/security/advisories/GHSA-5882-5rx9-xgxp
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/crawl4ai-docker-api-unauthenticated-remote…
disclosure@vulncheck.com