Geeklog 1.4.0sr2 and earlier allows remote attackers to obtain the full installation path via a direct request and possibly invalid arguments to (1) layout/professional/functions.php or (2) getimage.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26864
http://www.vupen.com/english/advisories/2006/2050
http://www.securityfocus.com/archive/1/435295/100/0/threaded