Cookie dan sesi for Slim

high5 checks

Session cookies are the keys to an account. Missing attributes turn a single XSS bug into full account takeover.

What Slim must have

  • Secure attribute on every cookie
  • HttpOnly on session cookies
  • SameSite=Lax or Strict on session cookies
  • No session identifier in URLs or localStorage
  • Session rotation after login and logout invalidation

How to fix it

  1. 1Set cookie attributes at the framework level so every cookie inherits them
  2. 2Move tokens out of localStorage to HttpOnly cookies

Slim context

Micro PHP framework for APIs and small applications.

Middleware is manual: add body parsing limits, CSRF and security headers yourself.