CVE-2019-7299

A stored cross-site scripting (XSS) vulnerability in the submit_ticket.php module in the WP Support Plus Responsive Ticket System plugin 9.1.1 for WordPress allows remote attackers to inject arbitrary web script or HTML via the subject parameter in wp-content/plugins/wp-support-plus-responsive-ticket-system/includes/ajax/submit_ticket.php.
Source: NIST