Directory traversal vulnerability in index.php in phphelpdesk 0.6.16 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the whattodo parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/38259
http://www.securityfocus.com/bid/26318
http://www.securityfocus.com/archive/1/483256/100/0/threaded