SQL injection vulnerability in includes/content/cart.inc.php in CubeCart PHP Shopping cart 4.3.4 through 4.3.9 allows remote attackers to execute arbitrary SQL commands via the shipKey parameter to index.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/59245
http://www.securityfocus.com/archive/1/511735/100/0/threaded