PHP remote file inclusion vulnerability in FtrainSoft Fast Click 2.3.8 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the path parameter to (1) show.php or (2) top.php.
https://www.exploit-db.com/exploits/1740
https://exchange.xforce.ibmcloud.com/vulnerabilities/26235
http://www.vupen.com/english/advisories/2006/1631
http://www.securityfocus.com/bid/17813
http://www.securityfocus.com/archive/1/432963/100/0/threaded