What is GHSA-4484-mhwr-fxpc?

GHSA-4484-mhwr-fxpc is a security advisory published by GitHub Security Advisories with Medium severity. A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution...

Which CVE IDs does GHSA-4484-mhwr-fxpc cover?

GHSA-4484-mhwr-fxpc covers the following CVE IDs: CVE-2026-3343. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-4484-mhwr-fxpc?

GHSA-4484-mhwr-fxpc has a CVSS v3 base score of 6.1, published by GitHub Security Advisories.

GHSA-4484-mhwr-fxpcMediumCVSS 6.1

A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution...

Vendor

GitHub Security Advisories

Published

March 3, 2026

Last Modified

August 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-3343 →

📋 Description

A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.

This vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-3343
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0004
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00004
https://psirt.watchguard.com/CVE-2026-3343
https://github.com/advisories/GHSA-4484-mhwr-fxpc