CVE-2025-55296CWE-79

LibreNMS allows stored XSS in Alert Template name field

Medium · published August 18, 2025

CVSS v3.1

5.5

EPSS

15%

Percentile

96.7

In the wild

Unconfirmed

What it is

librenms is a community-based GPL-licensed network monitoring system. A stored Cross-Site Scripting (XSS) vulnerability exists in LibreNMS (<= 25.6.0) in the Alert Template creation feature. This allows a user with the admin role to inject malicious JavaScript, which will be executed when the template is rendered, potentially compromising other admin accounts. This vulnerability is fixed in 25.8.0.

The record

Technical detail

CVSS v3.1: 5.5 · MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0: Not supplied
EPSS: 0.14808 · 96.7th percentile
Weakness: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published: 2025-08-18T17:27Z

EPSS history

Timeline

18 AUG 17:27Z
LibreNMS allows stored XSS in Alert Template name field
cvelistv5