# CVE-2026-81568: Path traversal in J2Store extension for Joomla

> Attackers can read arbitrary files on the server via path traversal in J2Store download functionality, exposing sensitive configuration data.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Sep 2026
- **Updated:** 15 Sep 2026
- **Also known as:** GHSA-pvq3-xj8x-x2hv

## What is CVE-2026-81568?

CVE-2026-81568 is a high-severity path traversal vulnerability in j2commerce.com J2Store extension for Joomla, published on 15 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 - Arbitrary file read via `task=download` in J2Store 1.0.0-3.3.2, 4.0.0-4.0.22, 4.1.0-4.1.7 - `J2StoreModelOrderdownloads::getFilePath()` built the on-disk path to a purchased digital download by concatenating the configured attachment folder with the product file's stored `product_file_save_name`, using only `JPath::clean()` (which normalises separators but does not resolve or reject `..` segments) and a plain `JFile::exists()` check — never confirming the resolved path stayed inside the configured attachment folder. If a product file's `product_file_save_name` ever contained a `../` traversal segment — most plausibly via the CSRF-forgeable admin product-file save actions described in Issue 1, but equally by any future integration or bug that writes that field — any customer holding a valid download `token`/`pid` pair for that product file could have the traversal resolve to a path outside the attachment folder and download any file readable by the web server (e.g. `configuration.php`).

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-81568?


## How do I fix CVE-2026-81568?

No fix has been published for CVE-2026-81568 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-81568 being exploited?

There is no known exploitation of CVE-2026-81568 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-81568 and fix it if it is affected.

What it is: CVE-2026-81568 is a high-severity path traversal vulnerability in j2commerce.com J2Store extension for Joomla, published on 15 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-2026-81568 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-2026-81568/ (Markdown: https://insights.sbomify.com/CVE-2026-81568/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-81568
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-81568
- OSV: https://osv.dev/vulnerability/CVE-2026-81568

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-81568/
Summaries are generated and may contain mistakes; the official description above is the record.