Medium 6.1Published Aug 19, 2026

CVE-2026-67189pfSense Plus/CE Stored XSS via Traffic Graphs PTR Record

Updated under an hour ago (2026-10-19 06:25 UTC)

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It affects Netgate pfSense Plus and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Netgate pfSense Plus

Exploited in the last 30 days

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.

CVSS: 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Awaiting Analysis
Record last updated: Oct 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Netgate pfSense Plus netgate:pfsense_plus (from the name)	before 26.07	CNA record
Netgate pfSense CE netgate:pfsense_ce (from the name)	through 2.8.1	CNA record

References

https://docs.netgate.com/downloads/pfSense-SA-26_21.webgui.ascvendor-advisory
https://docs.netgate.com/pfsense/en/latest/releases/26-07.htmlrelease-notes
https://docs.netgate.com/pfsense/en/latest/releases/2-9-0.htmlrelease-notes
https://www.vulncheck.com/advisories/pfsense-plus-ce-stored-xss-via-traffic-graphs-ptr-recordthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.