[keycloak-user] Cross Realm authorization

Hello, we implemented a custom REST endpoint using RealmResourceProvider to search for users by their attributes. We then secured the endpoint by using: AuthenticationManager.AuthResult authResult = authManager.authenticateBearerToken(session); if (authResult == null) { throw new NotAuthorizedException("Bearer token required"); } And if(!auth.hasClientRole(client,"view-users")){ throw new NotAuthorizedException("Necessary permission not available"); } We now have the problem, that we want to access the endpoint with technical users which are in the master realm to separate them from the real end-users. So the technical users get their access token from the master realm (which contains the necessary resource permissions for the user realm) and then access the endpoint in the user realm. Here AuthenticationManager.AuthResult authResult = authManager.authenticateBearerToken(session); if (authResult == null) { throw new NotAuthorizedException("Bearer token required"); } Always results in unauthorized. Looking at the code and testing I think with authenticateBearerToken() cross realm authentication is not possible. Correct? Do you have a suggestion how to achieve our goal? Mit freundlichen Grüßen / With kind regards David Herrmann RD/UIA Team Rising Stars [Computergenerierter Alternativtext: RDIU] Daimler AG HPC G464 70546 Stuttgart Mobil: +49 176 309 369 87 What3Words Address: ellbogen.sprüche.anfänge E-Mail: david_christian.herrmann@daimler.com<mailto:david_christian.herrmann@daimler.com> Daimler AG Sitz und Registergericht / Domicile and Court of Registry: Stuttgart; HRB-Nr. / Commercial Register No. 19360 Vorsitzender des Aufsichtsrats / Chairman of the Supervisory Board: Manfred Bischoff Vorstand / Board of Management: Dieter Zetsche (Vorsitzender / Chairman), Wolfgang Bernhard, Renata Jungo Brüngger, Ola Källenius, Wilfried Porth, Britta Seeger, Hubertus Troska, Bodo Uebber If you are not the addressee, please inform us immediately that you have received this e-mail by mistake, and delete it. We thank you for your support.