Directory traversal vulnerability in Xerver Free Web Server 2.10 and earlier allows remote attackers to list arbitrary directories via a .. (dot dot) in an HTTP GET request.
http://www.iss.net/security_center/static/8421.php
http://archives.neohapsis.com/archives/bugtraq/2002-03/0155.html
http://archives.neohapsis.com/archives/bugtraq/2002-03/0091.html