Unrestricted file upload vulnerability in the RoboHelpServer Servlet (robohelp/server) in Adobe RoboHelp Server 8 allows remote attackers to execute arbitrary code by uploading a Java Archive (.jsp) file during a PUBLISH action, then accessing it via a direct request to the file in the robohelp/robo/reserved/web directory under its sessionid subdirectory, as demonstrated by the vd_adobe module in VulnDisco Pack Professional 8.7 through 8.11.