Ai-Knowledge-Hub

The application uses NestJS with security best practices like Helmet for HTTP headers, global validation pipes, JWT-based authentication with ownership checks for resources, and throttling for rate limiting. Sensitive configurations (API keys, JWT secrets, DB URLs) are correctly loaded from environment variables. A custom HTTP exception filter provides consistent error handling. File uploads use unique filenames, and the `serveFile` endpoint relies on Express's `res.sendFile` which typically prevents path traversal. However, production deployments should harden CORS policies beyond `localhost:3000` and confirm robust path traversal prevention in `serveFile` for filenames provided by users. No 'eval' or obvious obfuscation detected.