---
id: CVE-2026-13374
title: >-
  Improper Neutralization of Input During Web Page Generation (XSS or
  'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise
  Technology Integration module) allows Stored XSS
summary: >-
  Improper Neutralization of Input During Web Page Generation (XSS or
  'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise
  Technology Integration module) allows Stored XSS. This vulnerability is an
  additional unmiti…
severity: none
cwe:
  - CWE-79
published: '2026-07-03'
updated: '2026-07-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-13374'
references:
  - url: 'https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00016'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
tags:
  - nvd
ingestedAt: '2026-07-04T04:55:39.373Z'
epss: 0.00271
epssPercentile: 0.17124
---

## Overview

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise Technology Integration module) allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-13937.


This issue affects Fireware OS 12.4 up to and including 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2.

## Remediation

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