Medium severity4.7NVD Advisory· Published Oct 15, 2026· Updated Oct 15, 2026
CVE-2026-111233
CVE-2026-111233
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.
Affected products
2- Range: 2.7.1 through 2.9.0
Patches
Vulnerability mechanics
References
4- abraxaslabs.tech/research/pfsense-ce-leftoversnvd
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.phpnvd
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.phpnvd
- www.vulncheck.com/advisories/netgate-pfsense-ce-2.7.1-through-2.9.0-reflected-xss-via-firewall-rules-phpnvd
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