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GHSA-hxw5-9cc5-cmw5
librenms/librenmsLibreNMS 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
- Attacker creates a new poller group and injects the payload in the 'group name' parameter
payload: <script>alert('XSS')</script>
- Victim navigates to the 'http://localhost/addhost' to add a new host
- The payload is executed
code sink: https://github.com/librenms/librenms/blob/25.4.0/includes/html/pages/addhost.inc.php#L284
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The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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