Only the latest release of Culvert is supported with security updates.

Do NOT open public issues for security vulnerabilities.

If you discover a security vulnerability in Culvert, please report it responsibly:

1. Preferred: Use GitHub Security Advisories to create a private report.
2. Alternative: Email the maintainers directly with details of the vulnerability.

• Description of the vulnerability
• Steps to reproduce
• Affected versions
• Potential impact
• Suggested fix (if any)

• Acknowledgment: Within 48 hours of receipt
• Assessment: Within 7 days
• Fix & Disclosure: Within 90 days (coordinated responsible disclosure)

We follow a 90-day responsible disclosure timeline. If a fix is not released within 90 days, the reporter may disclose the vulnerability publicly.

Culvert is a setup automation script for ligolo-ng tunneling. The following behaviors are features, not bugs:

• Downloading ligolo-ng binaries from GitHub releases
• Creating TUN interfaces with root privileges
• Starting an HTTP file server for agent transfer
• Generating agent commands with auto-detected IP addresses
• Managing IP routes through the TUN interface
• Running ligolo-proxy with self-signed certificates

These capabilities exist by design for legitimate security testing. Reports that simply describe Culvert working as intended will be closed.

Culvert is intended for authorized penetration testing, security research, and educational purposes only. Users are responsible for ensuring they have proper authorization before using this tool against any systems.