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HIGH

CVE-2026-84192

CVSS v3

7.1

HIGH

EPSS Score

0.3 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-09-01
Last Modified
2026-09-01

Frequently asked questions

What is CVE-2026-84192?

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.

Is CVE-2026-84192 actively exploited?

Active exploitation of CVE-2026-84192 has not been confirmed. Its EPSS score was 0.3% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-84192?

CVE-2026-84192 has a CVSS v3 base score of 7.1 (HIGH severity).

Is CVE-2026-84192 affecting your environment?

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