LibreNMS stored Cross-site Scripting vulnerability in poller group name

LibreNMS v25.4.0 suffers from Stored Cross-Site Scripting (XSS) Vulnerability in the 'group name' parameter of the 'http://localhost/poller/groups' form. This vulnerability allows attackers to inject malicious scripts into web pages viewed by other users.

---------------------------------POC-----------------------------

Before Setting: Enable 'distributed_poller' in http://localhost/settings/poller/distributed

1. Attacker creates a new poller group and injects the payload in the 'group name' parameter

payload: <script>alert('XSS')</script>

2. Victim navigates to the 'http://localhost/addhost' to add a new host
3. The payload is executed

code sink: https://github.com/librenms/librenms/blob/25.4.0/includes/html/pages/addhost.inc.php#L284