401 and 403 Bypass Cheat Sheet for Penetration Testers

If you can’t beat them…

Manual Techniques for 401 and 403 Bypass Change HTTP Method: Experiment with different HTTP methods (GET, POST, PUT, DELETE) to bypass restrictions. Alter URL Encoding: Manipulate URL encoding using double URL encoding, Unicode encoding, or mixed encoding to bypass access control. Directory Traversal: Use “../” or “./” in the URL […]