Medium 4.7Published Oct 15, 2026

CVE-2026-111233Netgate pfSense CE 2.7.1 through 2.9.0 Reflected XSS via firewall_rules.php

Updated under an hour ago (2026-10-19 07:30 UTC)

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It affects Netgate pfSense CE. 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 CE

Exploited in the last 30 days

Netgate pfSense CE 2.7.1 through 2.9.0 contains a reflected cross-site scripting vulnerability in firewall_rules.php that allows remote attackers to inject script via the unencoded if parameter. When the non-default Require Firewall Interface option is enabled, attackers can lure users with firewall rules privileges into opening a crafted GET link to execute script in the WebGUI with their privileges.

CVSS: 4.7 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/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 15, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

Netgate pfSense CE netgate:pfsense_ce (from the name)	from 2.7.1 through 2.9.0	CNA record

References

https://github.com/abraxas/pfsense-rules-if-xssexploit, technical-description
https://abraxaslabs.tech/research/pfsense-ce-leftoverstechnical-description
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L138-L146technical-description
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L391technical-description
https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.7.1-through-2.9.0-reflected-xss-via-firewall-rules-phpthird-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.