{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-67189","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-07-28T16:06:49.773Z","datePublished":"2026-08-19T19:18:50.158Z","dateUpdated":"2026-08-19T19:18:50.158Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-08-19T19:18:50.158Z"},"title":"pfSense Plus/CE Stored XSS via Traffic Graphs PTR Record","descriptions":[{"lang":"en","value":"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 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."}],"datePublic":"2026-08-13T00:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-79","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"affected":[{"defaultStatus":"affected","vendor":"Netgate","product":"pfSense Plus","versions":[{"status":"affected","version":"0","versionType":"custom","lessThan":"26.07"}]},{"defaultStatus":"affected","vendor":"Netgate","product":"pfSense CE","versions":[{"status":"affected","version":"0","versionType":"semver","lessThanOrEqual":"2.8.1"}]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","version":"3.1","baseSeverity":"MEDIUM","baseScore":6.1,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}}],"references":[{"url":"https://docs.netgate.com/downloads/pfSense-SA-26_21.webgui.asc","name":"Vendor Advisory","tags":["vendor-advisory"]},{"url":"https://docs.netgate.com/pfsense/en/latest/releases/26-07.html","name":"Plus Release Notes","tags":["release-notes"]},{"url":"https://docs.netgate.com/pfsense/en/latest/releases/2-9-0.html","name":"CE Release Notes","tags":["release-notes"]},{"url":"https://www.vulncheck.com/advisories/pfsense-plus-ce-stored-xss-via-traffic-graphs-ptr-record","tags":["third-party-advisory"]}],"credits":[{"lang":"en","value":"BENDIB MOHAMED ANIS","type":"finder"},{"lang":"en","value":"VulnCheck","type":"coordinator"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"vulncheck"}}}}