---
id: CVE-2026-78849
title: >-
  Cross Site Scripting vulnerability in Netgate pfSense Plus software versions
  <= 26.03 pfSense CE software versions <= 2.8.1 allows a remote attacker to
  execute arbitrary code via the captive_portal_status.widget.php file
summary: >-
  Cross Site Scripting vulnerability in Netgate pfSense Plus software versions
  <= 26.03 pfSense CE software versions <= 2.8.1 allows a remote attacker to
  execute arbitrary code via the captive_portal_status.widget.php file
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-09-04'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T14:17:09.903'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78849'
references:
  - url: 'https://docs.netgate.com/downloads/pfSense-SA-26_05.webgui.asc'
    label: cve@mitre.org
  - url: 'https://redmine.pfsense.org/issues/16773'
    label: cve@mitre.org
  - url: 'https://redmine.pfsense.org/attachments/6991'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T13:14:10.672289Z'
epss: 0.00501
epssPercentile: 0.40318
ingestedAt: '2026-09-08T20:10:03.167Z'
---

## Overview

Cross Site Scripting vulnerability in Netgate pfSense Plus software versions <= 26.03 pfSense CE software versions <= 2.8.1 allows a remote attacker to execute arbitrary code via the captive_portal_status.widget.php file

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.