SQL injection vulnerability in Primo Cart 1.0 and earlier allows remote attackers to execute arbitrary SQL commands via the (1) q parameter to search.php and (2) email parameter to user.php.
http://www.vupen.com/english/advisories/2006/0008
http://www.securityfocus.com/bid/16125
http://secunia.com/advisories/18264
http://pridels0.blogspot.com/2006/01/primo-cart-sql-inj.html