Multiple cross-site scripting (XSS) vulnerabilities in JBMC Software DirectAdmin 1.28.1 allow remote authenticated users to inject arbitrary web script or HTML via the (1) user parameter to (a) CMDSHOWRESELLER or (b) CMDSHOWUSER in the Admin level; the (2) TYPE parameter to (c) CMDTICKETCREATE or (d) CMDTICKET, the (3) user parameter to (e) CMDEMAILFORWARDERMODIFY, (f) CMDEMAILVACATIONMODIFY, or (g) CMDFTPSHOW, and the (4) name parameter to (h) CMDEMAILLIST in the User level; or the (5) user parameter to (i) CMDSHOWUSER in the Reseller level.