---
id: CVE-2026-78077
title: >-
  Joomla Extension - joomshaper.com -  Stored Cross-Site Scripting (XSS) in
  MegaMenu Layout Container & Embed Inputs in Helix Ultimate < 2.2.11
summary: >-
  Joomla Extension - joomshaper.com -  Stored Cross-Site Scripting (XSS) in
  MegaMenu Layout Container & Embed Inputs in Helix Ultimate < 2.2.11 -
  Unsanitized column and item configuration values stored within the MegaMenu
  layout JSON were …
severity: high
cvss: 8.6
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: joomshaper.com
product: Helix Ultimate extension for Joomla
affected:
  - helix_ultimate_extension_for_joomla 1.0-2.2.10
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-31T14:25:18.487560Z'
published: '2026-08-31'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T13:23:09.137Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-78077'
references:
  - url: 'https://www.joomshaper.com/joomla-templates/helixultimate'
tags:
  - cve.org
epss: 0.00418
epssPercentile: 0.36322
ingestedAt: '2026-11-05T19:30:42.642Z'
---

## Overview

Joomla Extension - joomshaper.com -  Stored Cross-Site Scripting (XSS) in MegaMenu Layout Container & Embed Inputs in Helix Ultimate < 2.2.11 - Unsanitized column and item configuration values stored within the MegaMenu layout JSON were rendered without complete contextual escaping, allowing injection of malicious HTML/JS. Stricter sanitization and tag allowlists via `InputFilter` and `htmlspecialchars` were implemented.

## Affected

- `helix_ultimate_extension_for_joomla 1.0-2.2.10`

## Remediation

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