Troubleshooting CodeIgniter 4 CSRF verification failures behind cloud load balancers and proxy headers on RHEL 9
Understanding CodeIgniter 4 CSRF and Proxy Headers CodeIgniter 4’s built-in Cross-Site Request Forgery (CSRF) protection is a critical security feature. It works by generating a unique token for each user session and embedding it in forms. When a form is submitted, the application verifies that the submitted token matches the one stored in the session. […]