Unrestricted file upload vulnerability in index.php in WikiWebWeaver 1.1 and earlier allows remote attackers to upload and execute arbitrary PHP code via an upload action specifying a filename with a double extension such as .gif.php, which is accessible from data/documents/.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35736
http://www.securityfocus.com/bid/25164
http://www.securityfocus.com/archive/1/475242/100/0/threaded