Sharetronix 3.1.1.3, 3.1.1, and earlier does not properly restrict access to unspecified AJAX functionality, which allows remote attackers to bypass authentication via unknown vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/89505
http://www.securityfocus.com/bid/64102
http://secunia.com/secunia_research/2013-12/