source: http://www.securityfocus.com/bid/16109/info

Jevontech PHPenpals is prone to an SQL injection vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input before using it in an SQL query.

Successful exploitation could result in a compromise of the application, disclosure or modification of data, or may permit an attacker to exploit vulnerabilities in the underlying database implementation. 

http://www.example.com/phpenpals/profile.php?personalID=999%20union%20select%201,2,3,4,5,6,7,8,9,10,11,12,password,14%20from%20admin/* 