PHP remote file inclusion vulnerability in index.php in RPortal 1.1 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the file_op parameter.
https://www.exploit-db.com/exploits/6648
https://exchange.xforce.ibmcloud.com/vulnerabilities/45618
http://www.securityfocus.com/bid/31523
http://www.securityfocus.com/archive/1/496891/100/0/threaded