post.php in XMB 1.9.2 allows remote attackers to obtain the installation path via an invalid fid parameter in a newthread action.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-3686
https://docs.xmbforum2.com/index.php?title=Security_Issue_History
http://www.vupen.com/english/advisories/2005/2488
http://www.securityfocus.com/bid/15489
http://www.securityfocus.com/archive/1/417078/30/0/threaded