Multiple SQL injection vulnerabilities in osTicket allow remote attackers to execute arbitrary SQL commands via the (1) id parameter to admin.php or (2) cat parameter to view.php.
Directory traversal vulnerability in attachments.php in osTicket allows remote attackers to read arbitrary files via .. sequences in the file parameter.
osTicket allows remote attackers to view sensitive uploaded files and possibly execute arbitrary code via an HTTP request that uploads a PHP file to the ticket attachments directory.
osTicket trusts a hidden form field in the submit form to limit the upload size of a document, which could allow remote attackers to upload a file of any size.