PHP remote file inclusion vulnerability in index.php in SimpCMS Light 04.10.2007 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the site parameter.
https://www.exploit-db.com/exploits/3705
https://exchange.xforce.ibmcloud.com/vulnerabilities/33572
http://www.vupen.com/english/advisories/2007/1348
http://www.securityfocus.com/bid/23439
http://www.securityfocus.com/archive/1/465343/100/100/threaded