PHP remote file inclusion vulnerability in lib/activeutil.php in Quicksilver Forums (QSF) 1.2.1 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the set[include_path] parameter.
https://www.exploit-db.com/exploits/2356
https://exchange.xforce.ibmcloud.com/vulnerabilities/28901
http://www.vupen.com/english/advisories/2006/3596