Relative redirect_uri handling is broken in RH-SSO 7.4 and later version

Solution Verified - Updated -

Issue

  • Getting invalid parameter: redirect_uri error during login, with the following error message recorded in the sso logs:
DEBUG [org.keycloak.protocol.oidc.utils.RedirectUtils] (default task-50) replacing relative valid redirect with: http://mydomain/redirect
WARN [org.keycloak.events] (default task-50) type=LOGIN_ERROR, realmId=myrealm, clientId=myclient, userId=null, ipAddress=x.x.x.x, error=invalid_redirect_uri, redirect_uri=/redirect

Environment

  • Red Hat Single Sign-On (RH-SSO)
    • 7.4.0+
  • Having a /redirect entry added in the Valid Redirect URIs field for a client configuration in Keycloak and the client redirect is set to redirect_uri=/redirect

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