Macromedia JRun 3.0 through 4.0, when running on Windows, allows remote attackers to retrieve files in the WEB-INF directory, which contains Java class files and configuration information, via a request to the WEB-INF directory with a trailing dot ("WEB-INF.").
http://www.westpoint.ltd.uk/advisories/wp-02-0002.txt
http://www.securityfocus.com/bid/5119
http://www.macromedia.com/v1/handlers/index.cfm?ID=23164