Can Cursor code be trusted for authentication?

Authentication code generated by Cursor should be treated with extra caution. The AI may produce implementations with weak password hashing algorithms, missing brute-force protection, insecure session management, or flawed JWT validation logic. Authentication is a critical security boundary where even small mistakes can lead to complete account takeover. Best practice is to use established authentication libraries like NextAuth, Clerk, or Supabase Auth rather than relying on Cursor-generated custom auth code. UNPWNED tests your authentication endpoints for common weaknesses and misconfigurations.