Wildfly is the free community version of the application server.  Security patches are generally not made available for this version.  They used to occasionally release updates for JBoss AS/wildfly, but these were typically for general bug fixes.  With the move to the rapid release cycle, I am not aware of any of these sorts of updates being made available recently.  If you want security patches, you will probably either need to do the research and fixes yourself, or purchase the supported version known as JBoss EAP.