SQL injection vulnerability in index.php in PHPShop 0.8.1 allows remote attackers to execute arbitrary SQL commands via the product_id parameter, as demonstrated by a shop/flypage action.
https://www.exploit-db.com/exploits/5041
http://www.securityfocus.com/bid/27570
http://www.securityfocus.com/archive/1/487435/100/0/threaded