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Security: cameronrye/activitypub-mcp

.github/SECURITY.md

Security Policy

Supported Versions

We actively support the following versions of ActivityPub MCP Server with security updates:

Version Supported
1.x.x
< 1.0

Reporting a Vulnerability

We take security vulnerabilities seriously. If you discover a security vulnerability, please follow these steps:

1. Do Not Create Public Issues

Please do not report security vulnerabilities through public GitHub issues. This could put users at risk.

2. Report Privately

Choose one of these methods to report security issues:

GitHub Security Advisories (Preferred)

  1. Go to the Security tab of this repository
  2. Click "Report a vulnerability"
  3. Fill out the security advisory form with details

Email

Send an email to the maintainers with:

  • Subject: [SECURITY] ActivityPub MCP Server - [Brief Description]
  • Details: Full description of the vulnerability
  • Impact: Potential impact and affected versions
  • Reproduction: Steps to reproduce (if applicable)

3. What to Include

When reporting a vulnerability, please include:

  • Description: Clear description of the vulnerability
  • Impact: What could an attacker accomplish?
  • Affected versions: Which versions are affected?
  • Reproduction steps: How to reproduce the issue
  • Proof of concept: Code or screenshots (if applicable)
  • Suggested fix: If you have ideas for a fix

Security Response Process

1. Acknowledgment

We will acknowledge receipt of your vulnerability report within 48 hours.

2. Investigation

We will investigate the issue and determine:

  • Severity level
  • Affected versions
  • Potential impact
  • Required fixes

3. Fix Development

We will develop and test a fix for the vulnerability.

4. Disclosure Timeline

  • Day 0: Vulnerability reported
  • Day 1-2: Acknowledgment sent
  • Day 3-14: Investigation and fix development
  • Day 14-30: Security release published
  • Day 30+: Public disclosure (if appropriate)

5. Security Release

We will:

  • Release a patched version
  • Publish a security advisory
  • Credit the reporter (if desired)

Security Best Practices

For Users

Installation Security

  • Use official packages: Only install from npm or official sources
  • Verify checksums: Check package integrity when possible
  • Keep updated: Regularly update to the latest version

Configuration Security

  • Secure environment variables: Never commit .env files
  • Use HTTPS: Always use HTTPS in production
  • Limit access: Restrict network access to necessary ports
  • Regular audits: Run npm audit regularly

Runtime Security

  • Monitor logs: Watch for suspicious activity
  • Rate limiting: Enable rate limiting in production
  • Input validation: Validate all external inputs
  • Secure headers: Use appropriate HTTP security headers

For Developers

Code Security

  • Input validation: Validate and sanitize all inputs
  • Output encoding: Properly encode outputs
  • Authentication: Implement proper authentication
  • Authorization: Check permissions for all actions

Dependencies

  • Minimal dependencies: Only include necessary dependencies
  • Regular updates: Keep dependencies updated
  • Security scanning: Use automated security scanning
  • License compliance: Ensure license compatibility

ActivityPub Security

  • Signature verification: Verify HTTP signatures
  • Actor validation: Validate remote actors
  • Content filtering: Filter malicious content
  • Rate limiting: Implement federation rate limits

Known Security Considerations

ActivityPub Protocol

  • HTTP Signature verification is critical for federation security
  • Actor impersonation is possible without proper verification
  • Content injection through malicious ActivityPub objects
  • Denial of service through federation flooding

MCP Integration

  • Command injection through malicious MCP requests
  • Resource exhaustion through excessive MCP calls
  • Information disclosure through verbose error messages
  • Privilege escalation through improper tool access

Node.js Environment

  • Prototype pollution in JavaScript objects
  • Path traversal in file operations
  • Code injection through eval or similar functions
  • Memory leaks in long-running processes

Security Tools and Automation

We use the following tools to maintain security:

  • npm audit: Dependency vulnerability scanning
  • CodeQL: Static code analysis
  • Dependabot: Automated dependency updates
  • GitHub Security Advisories: Vulnerability tracking

Responsible Disclosure

We believe in responsible disclosure and will work with security researchers to:

  • Understand the issue fully before disclosure
  • Develop appropriate fixes before public release
  • Coordinate disclosure timing to protect users
  • Provide credit to researchers (if desired)

Security Contact

For security-related questions or concerns:

  • GitHub Security Advisories: Report a vulnerability
  • General security questions: Create a private issue or discussion

Legal

This security policy is provided in good faith. We reserve the right to:

  • Determine the severity and impact of reported issues
  • Decide on appropriate disclosure timelines
  • Modify this policy as needed

Thank you for helping keep ActivityPub MCP Server secure! 🔒

There aren’t any published security advisories