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Start learningUpgrade org.keycloak:keycloak-services to version 26.3.0 or higher.
org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services.
Affected versions of this package are vulnerable to Insufficient Session Expiration due to the offline session of a user not being invalidated when the offline_access scope is removed. An attacker can maintain access to refresh tokens and continue to request new tokens by leveraging a session that should have been invalidated after scope removal.