WoltLab Community Framework (WCF) 1.0.6 in WoltLab Burning Board 3.0.5 allows remote attackers to obtain the full path via invalid (1) page and (2) form parameters, which leaks the path from an exception handler when a valid class cannot be found.
https://exchange.xforce.ibmcloud.com/vulnerabilities/41713
http://www.securityfocus.com/bid/28678
http://www.securityfocus.com/archive/1/490782/100/0/threaded
http://www.securityfocus.com/archive/1/490560/100/0/threaded
http://secunia.com/advisories/29719
http://lists.grok.org.uk/pipermail/full-disclosure/2008-April/061271.html
http://archives.neohapsis.com/archives/fulldisclosure/2008-04/0161.html