{"id":"CVE-2026-67189","title":"pfSense Plus before 26.07 and pfSense CE through 2.8.1 contain a stored cross-site scripting vulnerability in the Traffic Graphs top-talkers feature, where PTR records returned by reverse DNS lookups are incorporated without sanitization…","summary":"pfSense Plus before 26.07 and pfSense CE through 2.8.1 contain a stored cross-site scripting vulnerability in the Traffic Graphs top-talkers feature, where PTR records returned by reverse DNS lookups are incorporated without sanitization…","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":"2026-08-19","updated":"2026-09-23","sourceUpdated":"2026-09-23T18:14:58.577","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-67189","references":[{"url":"https://docs.netgate.com/downloads/pfSense-SA-26_21.webgui.asc","label":"disclosure@vulncheck.com"},{"url":"https://docs.netgate.com/pfsense/en/latest/releases/2-9-0.html","label":"disclosure@vulncheck.com"},{"url":"https://docs.netgate.com/pfsense/en/latest/releases/26-07.html","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/pfsense-plus-ce-stored-xss-via-traffic-graphs-ptr-record","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.0053,"epssPercentile":0.4377,"ingestedAt":"2026-09-23T18:29:33.083Z","slug":"CVE-2026-67189","body":"## Overview\n\npfSense Plus before 26.07 and pfSense CE through 2.8.1 contain a stored cross-site scripting vulnerability in the Traffic Graphs top-talkers feature, where PTR records returned by reverse DNS lookups are incorporated without sanitization into AJAX responses and rendered as HTML through a DOM sink in the administrator interface. An attacker who controls a PTR record and generates sufficient traffic to appear as a top talker can execute arbitrary JavaScript in an administrator's browser, gaining access to the authenticated session context and same-origin access to the firewall management interface, enabling account creation and arbitrary OS command execution.\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":0.1,"exploitation":0,"ransomware":0},"changes":[]}