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GHSA-hxw5-9cc5-cmw5

LowCVSS 2.1 / 10
Published May 19, 2025·Last modified May 19, 2025
Affected Components(0)

No affected components available

Description

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

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

Risk Scores
Base Score
2.1

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.

Threat Intelligence
1.3

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
0.28%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Low severity
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