Directory traversal vulnerability in OSClass before 3.4.2 allows remote attackers to read arbitrary files via a .. (dot dot) in the file parameter in a render action to oc-admin/index.php.
https://www.netsparker.com/lfi-vulnerability-in-osclass/
http://www.securityfocus.com/archive/1/533456/100/0/threaded
http://blog.osclass.org/2014/09/15/osclass-3-4-2-ready-download/