Let Other Sites Read Your Feeds With JavaScript
Sends a CORS header with your RSS and Atom feeds, so web apps, widgets and dashboards on other domains can load them with fetch() instead of hitting a browser error.
Snippet Library
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Limit REST API CORS to Your Own Apps
Replaces WordPress's permissive cross-origin (CORS) headers with an allow-list, so only the browser apps you name, such as a headless front end, can call the REST API with credentials.