{"id":"CVE-2026-56128","title":"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","summary":"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 store…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-09-03","updated":"2026-09-09","sourceUpdated":"2026-09-09T20:41:07.123","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56128","references":[{"url":"https://docs.netgate.com/downloads/pfSense-SA-26_11.webgui.asc","label":"disclosure@vulncheck.com"},{"url":"https://docs.netgate.com/pfsense/en/latest/releases/2-9-0.html","label":"disclosure@vulncheck.com"},{"url":"https://docs.netgate.com/pfsense/en/latest/releases/26-07.html","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/pfsense-plus-ce-stored-xss-via-firewall-schedule-edit-php","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00371,"epssPercentile":0.31009,"ingestedAt":"2026-09-09T21:22:45.565Z","slug":"CVE-2026-56128","body":"## Overview\n\npfSense 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}