Blog
Auth0 SPA SDK: allowed origins, callback and logout URLs, and CORS with the Auth0 Management API
Auth0 validates origins against application settings—misconfigured Allowed Web Origins break silent auth even with perfect API CORS.
1 min read
auth0spacors
Actions
Auth0 Actions run in the Auth0 cloud—never trust them to replace CORS on your API.
Custom claims added in Actions should not embed secrets readable by browser clients.
Custom domains
Custom login domains change cookie origins—update CORS and redirect URIs together.
Rotate certificates before expiry to avoid mixed auth outages.