# CVE-2026-78069: Missing authorization in J2Store extension for Joomla

> Attackers can bypass authorization in J2Store to execute arbitrary SQL and code via path traversal in the Apps controller.

- **Severity:** Critical 9.5 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Sep 2026
- **Updated:** 3 Sep 2026
- **Also known as:** GHSA-7345-4p68-cx7g

## What is CVE-2026-78069?

CVE-2026-78069 is a critical missing authorization vulnerability in j2commerce.com J2Store extension for Joomla, published on 3 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Joomla Extension - j2commerce.com - Missing authorization on Apps controller delegation chain in J2Store 1.0.0-3.3.21, 4.0.0-4.0.21, 4.1.0-4.1.6 - `J2StoreControllerApps`'s `appTask` delegation path instantiates app-plugin controllers with no ACL check anywhere in the code. It currently returns 403 only as a side effect of `fof.xml`'s wildcard-deny resolving under the singularised ACL key `app`, which has no explicit allow rule — not because of any deliberate check. Behind that path, `applocalizationdata::getInstallerTool()` used a caller-influenced table name with no allow-list, both to select a `#__j2store_*` table for truncation and to build a path to SQL files it then executes — a path-traversal-capable file read/execute.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-78069?


## How do I fix CVE-2026-78069?

No fix has been published for CVE-2026-78069 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-78069 being exploited?

There is no known exploitation of CVE-2026-78069 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-78069 and fix it if it is affected.

What it is: CVE-2026-78069 is a critical missing authorization vulnerability in j2commerce.com J2Store extension for Joomla, published on 3 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-78069 in the wild and no public exploit code.

Affected product: j2commerce.com J2Store 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-2026-78069/ (Markdown: https://insights.sbomify.com/CVE-2026-78069/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-78069
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78069
- OSV: https://osv.dev/vulnerability/CVE-2026-78069

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-78069/
Summaries are generated and may contain mistakes; the official description above is the record.