pfSense CE 2.7.1-2.9.0 Reflected XSS in firewall_rules.php
CVE-2026-111233 Published on October 15, 2026
Netgate pfSense CE 2.7.1 through 2.9.0 Reflected XSS via firewall_rules.php
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.
Vulnerability Analysis
CVE-2026-111233 can be exploited with network access. This vulnerability is consided to have a high level of attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-111233. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-111233 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2026-111233
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Affected Versions
Netgate pfSense CE:- Version 2.7.1, <= 2.9.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.