PHP remote file inclusion vulnerability in calendar.php in Visual Events Calendar 1.1 allows remote attackers to execute arbitrary PHP code via a URL in the cfg_dir parameter.
https://www.exploit-db.com/exploits/2141
https://exchange.xforce.ibmcloud.com/vulnerabilities/28267
http://www.vupen.com/english/advisories/2006/3201
http://www.securityfocus.com/archive/1/442468/100/0/threaded
http://securitytracker.com/id?1016646