I want to include a basic authentication-protected website inside another website using an iframe (In Nuxtjs).

<iframe
            id="included_page"
            title="included_page"
            src="https://URL/"
></iframe>

The only problem here is the basic auth window that pops up when including the website. All the users that can see the iframe are already authenticated and it would be bad user experience to ask them for a second authentication to see the included page. Is there some way to automate the authentication in the background like sending an HTTP auth request? The included site also supports digest auth if that works better for such cases.

Any help is greatly appreciated!