Cookie dan sesi for Cloudflare Workers

high5 checks

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

What Cloudflare Workers 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

Cloudflare Workers context

Serverless edge runtime executing JavaScript at the CDN layer.

Secrets belong in Worker bindings; anything bundled into the script is readable by reviewers.