SQL injection vulnerability in PCPIN Chat 5.0.4 and earlier allows remote attackers to execute arbitrary SQL commands via the username field (login parameter) to main.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25961
http://www.vupen.com/english/advisories/2006/1441
http://www.securityfocus.com/archive/1/436029/100/0/threaded
http://www.securityfocus.com/archive/1/431390/100/0/threaded