php - Is there a way to pass user authentication from a Wordpress site to ASP.NET api?

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I have an existing Wordpress website using Woocommerce for the store and need to add a new form to one of the pages. The form is created in Vue and will be speaking to a backend API running on ASP.NET.

Is there a way to hijack the authentication and authorization provided by Wordpress by the backend API? The only solution I can see atm is to either have the user login again (this time to the endpoints going to ASP.NET (super inconvenient for the user)) or somehow when a user logs into the main site, have the PHP script send that to an additional backend endpoint maybe ??��

The page itself is inaccessible without a user being logged in however, it does mean the endpoints are still open to the world without authentication to the ASP.NET api