Multiple PHP remote file inclusion vulnerabilities in POWERGAP allow remote attackers to execute arbitrary PHP code via a URL in the (1) shopid parameter to (a) s01.php, (b) s02.php, (c) s03.php, and (d) s04.php; and possibly a URL located after "shopid=" or "sid=" in the PATH_INFO.
https://www.exploit-db.com/exploits/2201
https://exchange.xforce.ibmcloud.com/vulnerabilities/28425
http://www.securityfocus.com/archive/1/443469/100/0/threaded