{"id":"CVE-2026-84191","title":"LibreNMS before 26.5.0 contains stored cross-site scripting vulnerabilities in VRF display pages where mplsVpnVrfDescription, vrf_name, and mplsVpnVrfRouteDistinguisher fields from SNMP polling are rendered without sanitization","summary":"LibreNMS before 26.5.0 contains stored cross-site scripting vulnerabilities in VRF display pages where mplsVpnVrfDescription, vrf_name, and mplsVpnVrfRouteDistinguisher fields from SNMP polling are rendered without sanitization. Attacker…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-09-01","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:18:59.270","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84191","references":[{"url":"https://github.com/librenms/librenms/security/advisories/GHSA-g993-wffj-m3gv","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/librenms-before-26.5.0-stored-xss-via-snmp-vrf-fields","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00188,"epssPercentile":0.08664,"ingestedAt":"2026-09-08T21:11:12.289Z","slug":"CVE-2026-84191","body":"## Overview\n\nLibreNMS before 26.5.0 contains stored cross-site scripting vulnerabilities in VRF display pages where mplsVpnVrfDescription, vrf_name, and mplsVpnVrfRouteDistinguisher fields from SNMP polling are rendered without sanitization. Attackers controlling a monitored network device can inject arbitrary JavaScript through SNMP responses that executes in the browser of any user viewing VRF-related pages.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}