CVE-2026-111233
CVE-2026-111233 · Netgate pfSense CE 2.7.1 through 2.9.0 Reflected XSS via firewall_rules.php
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 2.3 · Low · EPSS 1.1%
- Published
- Updated
Affected products and versions
pfsense ce
- Versions
- ≥ 2.7.1, ≤ 2.9.0: Affected (semver)
No fix published
Original sources
- https://github.com/abraxas/pfsense-rules-if-xss
- https://abraxaslabs.tech/research/pfsense-ce-leftovers
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L138-L146
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L391
- https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.7.1-through-2.9.0-reflected-xss-via-firewall-rules-php
- https://nvd.nist.gov/vuln/detail/CVE-2026-111233