Multiple cross-site scripting (XSS) vulnerabilities in (a) PMOS Help Desk 2.4, formerly (b) InverseFlow Help Desk 2.31 and also sold as (c) Ace Helpdesk 2.31, allow remote attackers to inject arbitrary web script or HTML via the (1) id or email parameter to ticketview.php, or (2) the email parameter to ticket.php.