Multiple SQL injection vulnerabilities in FishCart 3.1 allow remote attackers to execute arbitrary SQL commands via the (1) cartid parameter to upstnt.php or (2) psku parameter to display.php. NOTE: the vendor disputes this report, saying that they are forced SQL errors. The original researcher is known to be unreliable
https://exchange.xforce.ibmcloud.com/vulnerabilities/20386
http://www.securityfocus.com/archive/1/457754/100/200/threaded