Description
In osTicket before 1.12, XSS exists via /upload/file.php, /upload/scp/users.php?do=import-users, and /upload/scp/ajax.php/users/import if an agent manager user uploads a crafted .csv file to the User Importer, because file contents can appear in an error message. The XSS can lead to local file inclusion.
Remediation
References
Related Vulnerabilities
WordPress Plugin Grapefile File Sharing 'grapeupload.php' Arbitrary File Upload (1.1)
PrestaShop Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2019-19595)
Drupal Core 8.x Multiple Security Bypass Vulnerabilities (8.0.0 - 8.3.6)
WordPress Plugin Import Export WordPress Users Security Bypass (1.3.8)