How to authorize requests coming from next js to express js?

[Tsimopak]

Hi,

So I use in my frontend Next Js, and i have a separated express js server that has some endpoints that should be protected only for authorized users.

So my question is, after authenticated on next js (using a custom provider I made), how can i laverage it for express js know that I'm authenticated?

I was thinking to deliver via cookie the encrypted session to the express js so the express js can decrypt it and get the user from it.

The thing is, I'm not sure if it's possible to send it with cookie to another server because it sits on different domain and by default cookies are only saved for a specific origin no? and also, are there other methods i can use?