mcp-weather-server

The server demonstrates a strong focus on security with comprehensive features including: - **Input Sanitization:** Uses `DOMPurify` via `SecurityManager` to prevent XSS, SQL injection, command injection, and path traversal in all inputs (body, query, params, headers). - **Threat Detection:** `SecurityMonitor` actively detects brute force attempts, rate limit violations, and suspicious patterns (SQL/XSS/command injection) and can auto-block malicious IPs. - **Authentication & Authorization:** API key validation with permissions and rate limiting (`auth.ts`, `rate-limit.ts`) is in place, supporting different client tiers. - **Audit Logging:** `AuditLogger` provides detailed audit trails for security, data access, and API usage, with configurable severity, categories, and sensitive data masking. - **Resilience Patterns:** `CircuitBreaker`, `RetryStrategy`, `Bulkhead`, and `RateLimiter` prevent cascading failures and protect external APIs. - **Secure Headers:** Automatically adds `Content-Security-Policy`, `X-Content-Type-Options`, `X-Frame-Options`, `X-XSS-Protection`, and `Referrer-Policy` headers. - **No obvious hardcoded secrets:** Environment variables are used for API keys and sensitive configurations. Potential areas for even higher scores (though already excellent): - Real-time threat intelligence feeds for dynamic pattern updates. - More advanced behavioral analysis for anomaly detection beyond defined patterns. - External security audits and penetration testing results.