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Area

oidc

Describe the bug

When a user authenticates for the first time to the client, the LOGIN event is generated without the user session.
The problem is in the consent approval flow.
In the LoginActionsService, the event is sent before the session is created:

event.detail(Details.CONSENT, Details.CONSENT_VALUE_CONSENT_GRANTED);
event.success();

ClientSessionContext clientSessionCtx = AuthenticationProcessor.attachSession(authSession, null, session, realm, clientConnection, event);
return AuthenticationManager.redirectAfterSuccessfulFlow(session, realm, clientSessionCtx.getClientSession().getUserSession(), clientSessionCtx, request, session.getContext().getUri(), clientConnection, event, authSession);

Version

26.3.3

Regression

[ ] The issue is a regression

Expected behavior

The LOGIN event contains the user session when consent is approved.

Actual behavior

The LOGIN event doesn't contain the user session when consent is approved.

How to Reproduce?

Log in to the client with consent for the first time.

Anything else?

The PR that will fix the issue is here: https://github.com/keycloak/keycloak/pull/42866