# CVE-2026-78076: Missing authorization in Helix Ultimate extension for Joomla

> Authenticated users can modify arbitrary menu item layouts in Helix Ultimate due to missing authorization checks on the save-megamenu-settings endpoint.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Aug 2026
- **Updated:** 1 Sep 2026
- **Also known as:** GHSA-672g-vmcw-4mjj

## What is CVE-2026-78076?

CVE-2026-78076 is a medium-severity missing authorization vulnerability in joomshaper.com Helix Ultimate extension for Joomla, published on 31 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Joomla Extension - joomshaper.com - Broken Access Control & Missing Authorization in MegaMenu Settings in Helix Ultimate < 2.2.10 - The AJAX endpoint save-megamenu-settings failed to enforce item-level and menu-level edit permissions (core.edit on com_menus.item.{id} or core.admin). An authenticated user could submit modified layout parameters for arbitrary menu items without proper authorization.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-78076?


## How do I fix CVE-2026-78076?

No fix has been published for CVE-2026-78076 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-78076 being exploited?

There is no known exploitation of CVE-2026-78076 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-78076 and fix it if it is affected.

What it is: CVE-2026-78076 is a medium-severity missing authorization vulnerability in joomshaper.com Helix Ultimate extension for Joomla, published on 31 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-78076 in the wild and no public exploit code.

Affected product: joomshaper.com Helix Ultimate extension for Joomla. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-78076/ (Markdown: https://insights.sbomify.com/CVE-2026-78076/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-78076
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78076
- OSV: https://osv.dev/vulnerability/CVE-2026-78076

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-78076/
Summaries are generated and may contain mistakes; the official description above is the record.