pfSense Plus before 26.07 and CE before 2.9.0 allow authenticated users with the Firewall: Schedules: Edit privilege to inject arbitrary JavaScript via the descr parameter in /firewall_schedule_edit.php. The schedule description is stored without HTML sanitization and subsequently inserted into an HTML attribute value in /firewall_rules.php with only single-quote escaping applied, permitting double-quote breakout. The payload executes in the browser of any user with the Firewall: Rules privilege who views the rules list with the affected schedule attached.
History

Fri, 04 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 03 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 03 Sep 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Netgate
Netgate pfsense Ce
Netgate pfsense Plus
Vendors & Products Netgate
Netgate pfsense Ce
Netgate pfsense Plus

Thu, 03 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
Description pfSense Plus before 26.07 and CE before 2.9.0 allow authenticated users with the Firewall: Schedules: Edit privilege to inject arbitrary JavaScript via the descr parameter in /firewall_schedule_edit.php. The schedule description is stored without HTML sanitization and subsequently inserted into an HTML attribute value in /firewall_rules.php with only single-quote escaping applied, permitting double-quote breakout. The payload executes in the browser of any user with the Firewall: Rules privilege who views the rules list with the affected schedule attached.
Title pfSense Plus < 26.07 / CE < 2.9.0 Stored XSS via firewall_schedule_edit.php
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-03T14:22:32.197Z

Updated: 2026-09-03T17:23:08.982Z

Reserved: 2026-06-18T19:15:10.651Z

Link: CVE-2026-56128

cve-icon Vulnrichment

Updated: 2026-09-03T15:04:31.798Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-03T15:17:30.953

Modified: 2026-09-09T20:41:07.123

Link: CVE-2026-56128

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-03T14:22:32Z

Links: CVE-2026-56128 - Bugzilla