It was discovered that the ElytronManagedThread in Wildfly's Elytron subsystem in versions from 11 to 16 stores a SecurityIdentity to run the thread as. These threads do not necessarily terminate if the keep alive time has not expired. This could allow a shared thread to use the wrong security identity when executing.
{
"versions": [
{
"introduced": "11.0.0"
},
{
"last_affected": "16.0.0"
},
{
"introduced": "0"
},
{
"last_affected": "7.0.0"
}
]
}