PHP remote file inclusion vulnerability in plus.php in plusPHP Short URL Multi-User Script 1.6 allows remote attackers to execute arbitrary PHP code via a URL in the _pages_dir parameter.
https://www.exploit-db.com/exploits/5672
https://exchange.xforce.ibmcloud.com/vulnerabilities/42623
http://www.vupen.com/english/advisories/2008/1645/references