Detections
Analytics

CVE-2026-111233

low

Description

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.

References

https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.7.1-through-2.9.0-reflected-xss-via-firewall-rules-php

https://github.com/abraxas/pfsense-rules-if-xss

https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L391

https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L138-L146

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-102345

https://abraxaslabs.tech/research/pfsense-ce-leftovers

Details

Source: Mitre, NVD

Published: 2026-10-15

Updated: 2026-10-19

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 2.3

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Severity: Low

EPSS

EPSS: 0.01064