cors-csrf-defense
Cross-Origin Resource Sharing (CORS) whitelisting, preflight caching, and anti-CSRF token verification.
SKILL.mdskills/cors-csrf-defense/SKILL.md
GitHubCORS & CSRF Defense Protocol
- Never use Access-Control-Allow-Origin: * with credentials.
- Whitelist explicit origin domains dynamically.
- Require custom headers (e.g. X-Requested-With) on state-changing API mutations.