Allow one script URL

By default script.src is refused outright. An ALLOW_SCRIPT_URL hook can permit specific, vetted URLs and refuse everything else.

The config

window.DOMFortifyConfig = {
  ALLOW_SCRIPT_URL: (url) => url.startsWith('https://cdn.jsdelivr.net/') ? url : null,
};

Try it

Swap in https://evil.example/x.js to see it refused.