Multiple SQL injection vulnerabilities in PHP JackKnife (PHPJK) allow remote attackers to execute arbitrary SQL commands via (1) the iCategoryUnq parameter to G_Display.php or (2) the iSearchID parameter to Search/DisplayResults.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/34641
http://www.securityfocus.com/archive/1/470111/100/0/threaded
http://securityreason.com/securityalert/2768