CVE-2026-78849
Received Received - Intake

Cross Site Scripting in Netgate pfSense Plus and pfSense CE

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: MITRE

Description
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

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Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-05
AI Q&A
2026-09-05
EPSS Evaluated
N/A
NVD
CVE-2026-78849
EUVD
EUVD-2026-71610

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
netgate pfsense_plus to 26.03 (inc)
netgate pfsense_ce to 2.8.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a Cross Site Scripting (XSS) vulnerability in Netgate pfSense Plus and pfSense CE software. It allows a remote attacker to execute arbitrary code through the captive_portal_status.widget.php file in versions up to 26.03 (Plus) and 2.8.1 (CE).

Impact Analysis

An attacker could exploit this to run malicious scripts in your browser when accessing the pfSense interface. This may lead to session hijacking, data theft, or unauthorized actions on your network if you are an administrator.

Mitigation Strategies

Update pfSense Plus to version 26.04 or later and pfSense CE to version 2.8.2 or later to address the Cross Site Scripting vulnerability in captive_portal_status.widget.php.

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