---
id: CVE-2026-66494
title: >-
  Joomla Extension - joomshaper.com - Unauthenticated stored XSS in Shapes API
  endpoint SP Page Builder < 6.7.0 - An unauthenticated attacker can store
  malicious JavaScript in a Joomla site's database via a single HTTP request
summary: >-
  Joomla Extension - joomshaper.com - Unauthenticated stored XSS in Shapes API
  endpoint SP Page Builder < 6.7.0 - An unauthenticated attacker can store
  malicious JavaScript in a Joomla site's database via a single HTTP request.
  When an adm…
severity: none
cwe:
  - CWE-79
  - CWE-284
published: '2026-08-07'
updated: '2026-08-08'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-66494'
references:
  - url: 'https://www.joomshaper.com/page-builder'
    label: security@joomla.org
tags:
  - nvd
epss: 0.00498
epssPercentile: 0.40129
ingestedAt: '2026-08-09T02:32:00.424Z'
---

## Overview

Joomla Extension - joomshaper.com - Unauthenticated stored XSS in Shapes API endpoint SP Page Builder < 6.7.0 - An unauthenticated attacker can store malicious JavaScript in a Joomla site's database via a single HTTP request. When an administrator opens the SP Page Builder editor, the JavaScript executes in their browser automatically..

## Remediation

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