Fix · Express / Node
Fix “Third-party script supply chain” on Express / Node
Add integrity="sha384-..." and crossorigin to every third-party <script>, self-host critical ones, and drop vendors you don't need.
No server-level snippet for this control on Express / Node; apply the guidance below.
Verify the fix
Re-run the Third-party script supply chain 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 · Cloudflare