Secunia Security Advisory – 0x90 has reported a vulnerability in PHP-AGTC membership system, which can be exploited by malicious people to bypass certain security restrictions.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/60531/sa27430.txt
Source: https://packetstormsecurity.com/files/60531/Secunia-Security-Advisory-27430.html