SQL injection vulnerability in the Downloads module in Php-Nuke 6.x through 7.2 allows remote attackers to execute arbitrary SQL via the (1) orderby or (2) sid parameters to modules.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16074
http://www.waraxe.us/index.php?modname=sa&id=27
http://www.securityfocus.com/bid/27932
http://www.securityfocus.com/archive/1/488452/100/0/threaded