HIGH 7.1 NVD
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 esc
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.
References
- https://github.com/librenms/librenms/security/advisories/GHSA-7w8c-qgxg-m7jx
- https://www.vulncheck.com/advisories/librenms-before-26.3.1-stored-xss-via-snmp-syslog-dat
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-09-01 via NVD.
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