The GraphRAG API Service implements enterprise-grade security controls to protect against common web application vulnerabilities and ensure secure operation in production environments.

• Stateless Authentication: JWT tokens for secure, scalable authentication
• Singleton Pattern: Consistent token blacklist management across all requests
• Token Rotation: Automatic refresh token rotation for enhanced security
• Secure Storage: Tokens stored with proper expiration and revocation controls

• Granular Scopes: Fine-grained permissions for service-to-service authentication
• Role-Based Access: Hierarchical permission system with workspace isolation
• Key Rotation: Support for key rotation without service interruption
• Audit Logging: Comprehensive logging of all API key usage

Issue: Previous implementation used pickle serialization, which poses deserialization vulnerabilities Solution: Migrated to JSON serialization with backward compatibility

# Before (Vulnerable)
serialized = pickle.dumps(value)

# After (Secure)
serialized = json.dumps(value, default=str).encode('utf-8')

Benefits:

• Eliminates arbitrary code execution vulnerabilities
• Prevents pickle-based attacks and exploits
• Maintains data integrity with safe serialization
• Provides better interoperability

Issue: Multiple JWT manager instances caused inconsistent token blacklists Solution: Implemented singleton pattern for shared state management

Benefits:

• Shared token blacklist across all requests
• Consistent logout behavior system-wide
• Prevents token reuse after revocation
• Maintains session state integrity

Issue: Authentication errors not properly mapped to HTTP status codes Solution: Comprehensive exception handlers with security logging

Features:

• Proper HTTP status code mapping (401, 403, 429)
• Security event logging for audit trails
• Standardized error responses
• Information leakage prevention

• Path Traversal Protection: Advanced validation prevents directory traversal attacks
• SQL Injection Prevention: Parameterized queries with whitelisted field validation
• XSS Protection: Input sanitization and output encoding
• CSRF Protection: Token-based CSRF protection for state-changing operations

• Authentication Endpoints: 5 requests/minute, 30 requests/hour
• API Endpoints: Configurable rate limits per endpoint
• Burst Protection: Temporary burst allowance with sustained rate limiting
• IP-based Limiting: Per-IP rate limiting to prevent abuse

Content-Security-Policy: default-src 'self'
X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Strict-Transport-Security: max-age=31536000; includeSubDomains
X-XSS-Protection: 1; mode=block

• Multi-tenant Architecture: Complete isolation between workspaces
• Access Control: Workspace-specific permissions and data segregation
• Path Validation: Secure workspace path resolution with containment checks
• Audit Logging: Per-workspace security event logging

• Authentication Events: Login attempts, token usage, failures
• Authorization Events: Permission checks, access denials
• Security Events: Path traversal attempts, rate limit violations
• System Events: Configuration changes, administrative actions

• Failed Authentication Attempts: Real-time monitoring and alerting
• Rate Limit Violations: Tracking and analysis of abuse patterns
• Security Event Correlation: Advanced threat detection capabilities
• Performance Impact: Security control performance monitoring

# JWT Configuration
JWT_SECRET_KEY=your-secure-secret-key-32-chars-minimum
JWT_ALGORITHM=HS256
JWT_ACCESS_TOKEN_EXPIRE_MINUTES=30
JWT_REFRESH_TOKEN_EXPIRE_DAYS=7

# Rate Limiting
RATE_LIMIT_ENABLED=true
LOGIN_RATE_LIMIT_PER_MINUTE=5
LOGIN_RATE_LIMIT_PER_HOUR=30

# Security Headers
ENABLE_SECURITY_HEADERS=true
CORS_ORIGINS=["https://yourdomain.com"]

1. Use Strong Secrets: Minimum 32 characters for JWT secrets
2. Enable HTTPS: Always use TLS in production
3. Regular Key Rotation: Rotate API keys and JWT secrets regularly
4. Monitor Logs: Implement real-time security monitoring
5. Update Dependencies: Keep all dependencies up to date

• 100% Authentication Flow Coverage: All authentication scenarios tested
• Security Control Testing: Rate limiting, input validation, authorization
• Vulnerability Testing: Path traversal, injection attacks, XSS
• Integration Testing: End-to-end security workflow validation

• ✅ Zero Critical Vulnerabilities: All security issues resolved
• ✅ 94/94 Tests Passing: Comprehensive test suite validation
• ✅ Production Ready: Enterprise-grade security controls implemented

For security-related issues or questions:

• Security Issues: Please report via GitHub Security Advisories
• General Questions: Create an issue with the security label
• Emergency Contact: Follow responsible disclosure practices

• OWASP Top 10
• FastAPI Security
• JWT Best Practices
• Redis Security