VULNERABILITY INTELLIGENCE

CVE-2026-26989

CVSS score4.3 MEDIUM
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-02-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L

Description

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are affected by a Stored Cross-Site Scripting (XSS) vulnerability in the Alert Rules workflow. An attacker with administrative privileges can inject malicious scripts that execute in the browser context of any user who accesses the Alert Rules page. This issue has been fixed in version 26.2.0.

Weakness classification

  • security-advisories@github.com: CWE-79

Primary references