---
id: CVE-2026-66917
title: >-
  Joomla Extension - joomgalleryfriends.net - Stored XSS in JoomGallery < 4.4.0
  - An authenticated, privileged can store an XSS payload in any image causing
  JS execution in every visitor's browser.
summary: >-
  Joomla Extension - joomgalleryfriends.net - Stored XSS in JoomGallery < 4.4.0
  - An authenticated, privileged can store an XSS payload in any image causing
  JS execution in every visitor's browser.
severity: none
cwe:
  - CWE-79
published: '2026-08-22'
updated: '2026-08-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-66917'
references:
  - url: 'https://www.joomgalleryfriends.net/'
    label: security@joomla.org
tags:
  - nvd
  - exploit-available
ingestedAt: '2026-08-23T04:42:13.978Z'
epss: 0.00518
epssPercentile: 0.41537
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/toanln-cov/CVE-2026-66917'
  checkedAt: '2026-09-25T08:21:08.223Z'
exploitAvailable: true
---

## Overview

Joomla Extension - joomgalleryfriends.net - Stored XSS in JoomGallery < 4.4.0 - An authenticated, privileged can store an XSS payload in any image causing JS execution in every visitor's browser.

## Remediation

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