A flaw was found in Wildfly from version 11. The ElytronManagedThread in Elytron subsystem stores a SecurityIdentity to run the thread as. These threads do not necessarily terminate if the keep alive time has not expired. This could cause a shared thread to use the wrong security identity when executing.

A flaw was found in wildfly-core in all versions. If a vault expression is in the form of a single attribute that contains multiple expressions, a user who was granted access to the management interface can potentially access a vault expression they should not be able to access and possibly retrieve the item which was stored in the vault. The highest threat from this vulnerability is data confidentiality and integrity.