The Digest NonceManager creates a ScheduledThreadPoolExecutor which is never shut down -------------------------------------------------------------------------------------- Key: WFCORE-4574 URL: https://issues.jboss.org/browse/WFCORE-4574 Project: WildFly Core Issue Type: Bug Components: Security Reporter: Ashley Abdel-Sayed Assignee: Ashley Abdel-Sayed Priority: Major The NonceManager creates a ScheduledThreadPoolExecutor in https://github.com/wildfly-security/wildfly-elytron/blob/master/http/dige... but there is no way to shut it down, thus resulting in a thread leak when stopping an application.