Directory traversal vulnerability in .include/init.php (aka admin/_include/init.php) in QuiXplorer 2.3.2 and earlier, as used in TinyWebGallery (TWG) 1.7.6 and earlier, allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the lang parameter to admin/index.php.
https://www.exploit-db.com/exploits/8649
https://exchange.xforce.ibmcloud.com/vulnerabilities/50408
http://www.tinywebgallery.com/forum/viewtopic.php?t=1653
http://www.securityfocus.com/archive/1/503396/100/0/threaded