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) CMD_SHOW_RESELLER or (b) CMD_SHOW_USER in the Admin level; the (2) TYPE parameter to (c) CMD_TICKET_CREATE or (d) CMD_TICKET, the (3) user parameter to (e) CMD_EMAIL_FORWARDER_MODIFY, (f) CMD_EMAIL_VACATION_MODIFY, or (g) CMD_FTP_SHOW, and the (4) name parameter to (h) CMD_EMAIL_LIST in the User level; or the (5) user parameter to (i) CMD_SHOW_USER in the Reseller level.