Secunia Security Advisory – A vulnerability has been reported in the Two-Step External Links module for vBulletin, which can be exploited by malicious people to conduct cross-site scripting attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/88770/sa39552.txt
Source: https://packetstormsecurity.com/files/88770/Secunia-Security-Advisory-39552.html