Advisory Details

December 23rd, 2025

LibreNMS Alert Rule API Cross-Site Scripting Vulnerability

ZDI-25-1182
ZDI-CAN-28575

CVE ID CVE-2025-68614
CVSS SCORE 4.3, AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L
AFFECTED VENDORS LibreNMS
AFFECTED PRODUCTS LibreNMS
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary script on affected installations of LibreNMS. Authentication is required to exploit this vulnerability.

The specific flaw exists within the handling of the name parameter provided to the rules endpoint. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of arbitrary script. An attacker can leverage this vulnerability to execute script in the context of a target user.

ADDITIONAL DETAILS LibreNMS has issued an update to correct this vulnerability. More details can be found at:
https://github.com/librenms/librenms/security/advisories/GHSA-c89f-8g7g-59wj
DISCLOSURE TIMELINE
  • 2025-11-18 - Vulnerability reported to vendor
  • 2025-12-23 - Coordinated public release of advisory
  • 2025-12-23 - Advisory Updated
CREDIT Simon Humbert of Trend Research
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