Laurentiu Matei eXpandable Home Page (XHP) CMS 0.5.1 allows remote attackers to obtain the installation path via a query to the engine module, probably with an invalid action parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/28862
http://www.vupen.com/english/advisories/2006/3560
http://www.securityfocus.com/archive/1/445727/100/0/threaded