CVE-2026-56127

pfSense Plus before 26.07 and CE before 2.9.0 allow authenticated users with the Firewall: Rules: Edit privilege to inject arbitrary JavaScript via the descr parameter in /firewall_rules_edit.php. The firewall rule description is stored in the pfSense XML configuration with only backslash-escaping applied and no HTML sanitization, then rendered without encoding in the firewall log table in /status_logs_filter.php. The payload executes in the browser of any user with the Status: Logs: Firewall privilege who views the affected log entries.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://docs.netgate.com/downloads/pfSense-SA-26_10.webgui.asc
https://docs.netgate.com/pfsense/en/latest/releases/2-9-0.html
https://docs.netgate.com/pfsense/en/latest/releases/26-07.html
https://www.vulncheck.com/advisories/pfsense-plus-ce-stored-xss-via-firewall-rules-edit-php

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-03 15:17

Updated : 2026-09-09 20:41

NVD link : CVE-2026-56127

Mitre link : CVE-2026-56127

CVE.ORG link : CVE-2026-56127

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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