Is CVE-2026-111233 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-111233 being exploited in the wild.

How severe is CVE-2026-111233?

Medium severity, with a CVSS score of 4.7, published 15 October 2026.

Which products and versions are affected?

Netgate Pfsense Ce 2.7.1 through 2.9.0.

Is there a fix for CVE-2026-111233?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-111233 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-111233?

Check whether you run Netgate Pfsense Ce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-111233: Netgate pfSense CE reflected XSS in firewall_rules.php

CVE-2026-111233 · Severity: medium · CVSS 4.7 · Published 2026-10-15

pfSense CE is an open-source firewall that protects networks through a web-based administration interface. A reflected cross-site scripting vulnerability in the firewall rules page allows attackers to inject malicious scripts that execute with administrator privileges if a user clicks a crafted link. When the "Require Firewall Interface" option is enabled, users with firewall rules privileges who open the attacker's link can have their WebGUI session compromised.

Technologies: Netgate Pfsense Ce. Vendors: Netgate.

Quick answers

Is CVE-2026-111233 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-111233 being exploited in the wild.
How severe is CVE-2026-111233?: Medium severity, with a CVSS score of 4.7, published 15 October 2026.
Which products and versions are affected?: Netgate Pfsense Ce 2.7.1 through 2.9.0.
Is there a fix for CVE-2026-111233?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-111233 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-111233?: Check whether you run Netgate Pfsense Ce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A reflected XSS vulnerability exists in firewall_rules.php where the unencoded "if" parameter allows script injection. The attack is reflected—the payload appears in the HTTP request itself—and requires the non-default "Require Firewall Interface" setting to be enabled plus user interaction (clicking a malicious link). An attacker with no authentication can craft a link that, when clicked by an authenticated administrator, executes JavaScript in their WebGUI session.

Affected products

Netgate pfSense CE 2.7.1 through 2.9.0

Timeline

2026-10-15: disclosed

References

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