Falcon web server 2.0.0.1021 and earlier allows remote attackers to bypass access restrictions for protected files via a URL whose directory portion ends in a . (dot).
http://www.iss.net/security_center/static/9179.php
http://online.securityfocus.com/archive/1/274205
http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0084.html