index.php in GANTTy 1.0.3 allows remote attackers to obtain the full path of the web server via an invalid lang parameter in an authenticate action.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26964
http://www.vupen.com/english/advisories/2006/2188
http://www.securityfocus.com/archive/1/436125/100/0/threaded