{"id":"CVE-2026-84192","title":"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","summary":"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 arbitra…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","cwe":["CWE-79"],"vendor":"librenms","product":"librenms","affected":["librenms < 26.3.1"],"published":"2026-09-01","updated":"2026-10-08","sourceUpdated":"2026-10-08T16:17:54.780","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84192","references":[{"url":"https://github.com/librenms/librenms/security/advisories/GHSA-7w8c-qgxg-m7jx","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/librenms-before-26.3.1-stored-xss-via-snmp-syslog-data","label":"disclosure@vulncheck.com"},{"url":"https://github.com/librenms/librenms/security/advisories/GHSA-7w8c-qgxg-m7jx","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-01T15:23:13.985065Z"},"epss":0.00331,"epssPercentile":0.26119,"ingestedAt":"2026-09-08T21:11:12.289Z","slug":"CVE-2026-84192","body":"## Overview\n\nLibreNMS 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":218180,"id":"CVE-2026-84192","ts":1791478475576,"field":"exploit_available","old":"false","new":"true"}]}