In Apache ActiveMQ 5.x before 5.14.2, an instance of a cross-site scripting vulnerability was identified to be present in the web based administration console. The root cause of this issue is improper user data output validation.
http://www.securitytracker.com/id/1037475
http://www.securityfocus.com/bid/94882
http://activemq.apache.org/security-advisories.data/CVE-2016-6810-announcement.txt