Multiple cross-site scripting vulnerabilities in FishCart 3.1 allow remote attackers to inject arbitrary web script or HTML via the (1) trackingnum, (2) reqagree, or (3) m parameter to upstracking.php or (4) nlst parameter to display.php. NOTE: the vendor was not able to reproduce some of the reported vectors but believes that they have been addressed. The original researcher is known to be unreliable.
https://exchange.xforce.ibmcloud.com/vulnerabilities/20384
http://www.securityfocus.com/archive/1/457754/100/200/threaded
http://www.fishcart.org/archives/200505/msg00028.html