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CVE-2026-56126

pfSense Plus < 26.07 / CE < 2.9.0 Stored XSS via status_monitoring.php

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 26.07, 2.9.0
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

pfSense Plus before 26.07 and CE before 2.9.0 allow authenticated users with the Status: Monitoring privilege to inject arbitrary JavaScript via graph configuration parameters in /status_monitoring.php. Multiple POST parameters including graph-left, graph-right, time-period, resolution, start-date, end-date, start-time, end-time, graph-type, invert, and refresh-interval are concatenated and written to the global pfSense XML configuration without sanitization, then echoed unsanitized into a JavaScript string context on page render. Because the setting is stored in the global configuration, the payload executes in the browser of every user who visits the Status: Monitoring page.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Netgate pfSense Plus

    fixed in 26.07

  • Netgate pfSense CE

    fixed in 2.9.0

References 4

docs.netgate.com

vulncheck.com