CVE-2026-2728

MEDIUM

LibreNMS < 26.3.0 - Authenticated Cross-Site Scripting in Showconfig Page

Title source: llm

Description

LibreNMS versions before 26.3.0 are affected by an authenticated Cross-site Scripting vulnerability on the showconfig page. Successful exploitation requires administrative privileges. Exploitation could result in XSS attacks being performed against other users with access to the page.

References (1)

Core 1

Core References

Exploit exploit

https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#xss-on-showconfig-page-2630

Scores

CVSS v3 4.8

EPSS 0.0022

EPSS Percentile 12.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (2)

librenms/librenms < 26.3.0 (2 CPE variants)

librenms/librenms 25.12.0 - 26.3.0Packagist

Published Apr 13, 2026

Tracked Since Apr 13, 2026