The Digest NonceManager creates a ScheduledThreadPoolExecutor which is never shut down -------------------------------------------------------------------------------------- Key: ELY-1843 URL: https://issues.jboss.org/browse/ELY-1843 Project: WildFly Elytron Issue Type: Bug Components: Authentication Mechanisms, HTTP Affects Versions: 1.9.1.Final Reporter: Tristan Tarrant Assignee: Ashley Abdel-Sayed Priority: Major Fix For: 1.10.0.CR4 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.