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GHSA-hxw5-9cc5-cmw5

LibreNMS stored Cross-site Scripting vulnerability in poller group name

Source: GitHub Advisory Database (reviewed) Low CVE-2025-47931

Packages

EcosystemPackageAffectedFixed in
Packagist librenms/librenms < 25.5.0 25.5.0

Details

As written in the advisory (Markdown source, shown as plain text).

### 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

References

External links from the advisory. They lead to third-party sites.