Bug 2528065 (CVE-2026-56128)

Summary: CVE-2026-56128 pfSense Plus: CE: pfSense Plus and CE: Stored Cross-Site Scripting (XSS) via firewall schedule description.
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akhatavk, aos-team-art-private, asdas, dpaolell, gparvin, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhaigner, sghai, sidsharm, suppawar, vlaad
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in pfSense Plus and CE. An authenticated user with the 'Firewall: Schedules: Edit' privilege can inject malicious JavaScript code into the schedule description. This code is stored without proper sanitization and executes in the browser of any user with the 'Firewall: Rules' privilege when they view the firewall rules list. This vulnerability, known as stored Cross-Site Scripting (XSS), allows for arbitrary code execution, potentially leading to information disclosure or other client-side attacks.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-09-03 14:46:39 UTC
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.