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CVE-2026-81568— 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

Quick assessment

Affected
j2commerce.com J2Store extension for Joomla
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Joomla 扩展 - j2commerce.com - J2Store 1.0.0-3.3.2、4.0.0-4.0.22、4.1.0-4.1.7 中通过 实现任意文件读取 在 J2Store 中， 方法通过将配置的附件文件夹与产品文件的 （即存储的文件名）进行拼接，构建已购买数字下载文件的磁盘路径。该方法仅使用了 （仅规范化路径分隔符，但不会解析或过滤 路径段）和一个简单的 检查，但从未验证解析后的路径是否仍然位于配置的附件文件夹内。 如果某个产品文件的 中包含 路径遍历片段——最可能的情况是通过问题 1 中描述

CVSS 8.7 · High

Affected Version Matrix 3

VendorProduct Version RangeStatus
j2commerce.com J2Store extension for Joomla 1.0.0-3.3.22 affected
4.0.0-4.0.22 affected
4.1.0-4.1.7 affected
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I. Basic Information for CVE-2026-81568

Vulnerability Information
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Vulnerability Title
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
Source: CVE Program / CVE List V5
Vulnerability 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`).
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
j2commerce.com J2Store extension for Joomla 1.0.0-3.3.22 -

II. Public POCs for CVE-2026-81568

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III. Intelligence Information for CVE-2026-81568

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Vendor Pages for CVE-2026-81568 (1)

Same Patch Batch · j2commerce.com · 2026-09-15 · 6 CVEs total

CVE-2026-82189 8.7 HIGH Joomla Extension - j2commerce.com - Any order can be marked Failed by anyone in J2Store 1.
CVE-2026-81567 8.7 HIGH Joomla Extension - j2commerce.com - Unauthenticated blind SQL injection in the storefront
CVE-2026-78081 7.1 HIGH Joomla Extension - j2commerce.com - Missing CSRF protection on cart, checkout and myprofil
CVE-2026-82190 6.3 MEDIUM Joomla Extension - j2commerce.com - Predictable/forgeable order access token in J2Store 1.
CVE-2026-82191 5.3 MEDIUM Joomla Extension - j2commerce.com - Unescaped request data reflected into PayPal notify re

IV. Related Vulnerabilities

Same product: J2Store extension for Joomla
Same vendor: j2commerce.com
Same weakness: CWE-22

V. Comments for CVE-2026-81568

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