WebTrends Reporting Center 4.0d allows remote attackers to determine the real path of the web server via a GET request to get_od_toc.pl with an empty Profile parameter, which leaks the pathname in an error message.
http://www.ngssoftware.com/advisories/wtr.txt
http://www.iss.net/security_center/static/8865.php
http://archives.neohapsis.com/archives/bugtraq/2002-04/0207.html