PHP remote file inclusion vulnerability in profitCode ppalCart 2.5 EE, possibly a component of PayProCart, allows remote attackers to execute arbitrary PHP code via a URL in the (1) proMod parameter to (a) index.php, or the (2) docroot parameter to (b) index.php or (c) mainpage.php.
https://www.exploit-db.com/exploits/2316
https://exchange.xforce.ibmcloud.com/vulnerabilities/28781
http://www.vupen.com/english/advisories/2006/3557
http://www.securityfocus.com/archive/1/446076/100/0/threaded
http://www.securityfocus.com/archive/1/445748/100/0/threaded