CVE-2026-84192
HIGH
NVD
CVSS Score
7.1
Severity
HIGH
Published
Sep 01, 2026
Vendor
unknown
Description
LibreNMS before 26.3.1 contains a stored cross-site scripting vulnerability in legacy PHP templates that output SNMP-sourced and syslog-sourced data without escaping. An attacker who controls a monitored network device can inject arbitrary JavaScript through SNMP interface descriptions or syslog program fields that executes when authenticated users view affected pages.