Secunia Security Advisory – A weakness and a vulnerability have been reported in NQcontent, which can be exploited by malicious people to determine valid user accounts and conduct cross-site scripting attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/91989/sa40629.txt
Source: https://packetstormsecurity.com/files/91989/Secunia-Security-Advisory-40629.html

