Fixing Content-Security-Policies with Cloudflare Workers

This guide explains how to implement and refine Content-Security-Policy and other security headers by leveraging Cloudflare Workers to inject response headers without modifying origin servers, including setup, routing, and iterative CSP tuning using browser developer tools and SecurityHeaders.io. It also covers Cloudflare SSL/TLS hardening (HSTS, minimum TLS version, TLS 1.3), route scoping for performance/cost control, Worker pricing models, and references to OWASP and CSP resources.