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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 4
- Cpes+1 CPE criteria (now 1)NVD modified 2026-10-19 20:41
- StatusAwaiting Analysis → AnalyzedNVD modified 2026-10-19 20:41
- StatusReceived → Awaiting AnalysisNVD modified 2026-10-15 21:05
- First seenCVSS 2.3NVD modified 2026-10-15 19:17
Affected (CPE criteria) 1
cpe:2.3:a:pfsense:pfsense:*:*:*:*:community:*:*:*
References 5
- https://abraxaslabs.tech/research/pfsense-ce-leftovers Issue Tracking
- https://github.com/abraxas/pfsense-rules-if-xss Third Party Advisory
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L138-L146 Product
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L391 Product
- https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.7.1-through-2.9.0-reflected-xss-via-firewall-rules-php Third Party Advisory