Fix · Cloudflare
Fix “MIME-sniffing protection” on Cloudflare
Add: X-Content-Type-Options: nosniff
// Transform Rules > Modify Response Header > Set static
// X-Content-Type-Options = nosniff
Verify the fix
Re-run the MIME-sniffing protection check after deploying. Test config changes in staging first and keep a rollback: a wrong header can break a site faster than a missing one.
Other stacks: nginx · Apache · Caddy · Express / Node