CVE-2026-56127
Medium
Description
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.
SeverityMedium
CVSS5.4
Exploit probability—
ProductpfSense Plus
PublishedSep 3, 2026
First seenSep 3, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Netgate pfSense Plus26.07 or later
- Netgate pfSense CE2.9.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Netgate pfSense Plus | v < 26.07 | 26.07 |
| Netgate pfSense CE | v < 2.9.0 | 2.9.0 |
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