Nagios XI 5.7.5 contains a cross-site scripting vulnerability in the file /usr/local/nagiosxi/html/admin/sshterm.php, due to improper sanitization of user-controlled input. A maliciously crafted URL, when clicked by an admin user, can be used to steal session cookies, or it can be chained with the previous bugs to get one-click remote command execution on the Nagios XI server.
View the template here CVE-2021-25299.yaml
References:
https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md