CORS Audit

Perform a systematic CORS configuration audit across all layers of a web project. Identify misconfigurations, redundant headers, and security issues before they cause production problems.

Language

Match user's language: Respond in the same language the user uses.

Bundled Resources

• scripts/validate_cors.py — Automated CORS validator (Python stdlib, no dependencies)
• references/cors_checklist.md — Detailed per-item audit checklist with pass/fail criteria
• references/architecture_patterns.md — CORS strategy for each architecture type with configuration examples
• references/script_reference.md — Full script subcommands, options, and usage examples

When to Use

• CORS errors appear in browser console after deployment or configuration changes
• Setting up a new project with cross-origin API calls