# CVE-2026-81568

## Summary

- **CVE ID:** CVE-2026-81568
- **Severity:** HIGH
- **CVSS Score:** 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)
- **CWE:** CWE-22
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## 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`).

## Affected Products

- j2commerce.com — J2Store extension for Joomla (1.0.0-3.3.22)
- j2commerce.com — J2Store extension for Joomla (4.0.0-4.0.22)
- j2commerce.com — J2Store extension for Joomla (4.1.0-4.1.7)

## References

- [CNA](https://www.j2commerce.com/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.33%
- **EPSS Percentile:** 26.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._