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CVE-2026-82189— Joomla Extension - j2commerce.com - Any order can be marked Failed by anyone 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 扩展组件 j2commerce.com 中，J2Store 版本 1.0.0–3.3.2、4.0.0–4.0.22 以及 4.1.0–4.1.7 存在一个严重漏洞：任何未认证用户均可将任意订单标记为“失败”（Failed）。 该漏洞可导致针对订单处理流程的未认证拒绝服务（DoS）攻击：攻击者可以批量将待处理订单（pending orders）标记为失败，从而干扰收入并迫使商家手动重新处理订单；或者将已完成的订单（already-fulfilled orders）重新标记为“失败”，引发运营混乱（如导致

CVSS 8.7 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

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-2026-82189

Vulnerability Information
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Vulnerability Title
Joomla Extension - j2commerce.com - Any order can be marked Failed by anyone 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 - Any order can be marked Failed by anyone in J2Store 1.0.0-3.3.2, 4.0.0-4.0.22, 4.1.0-4.1.7 - Unauthenticated denial-of-service against the order pipeline: mass-failing pending orders to disrupt revenue and force manual reprocessing, or flipping already-fulfilled orders back to `FAILED` to cause operational confusion (unwarranted refunds/cancellations, customer-support load). Unlike the earlier confirmation-fraud issue, this required no correct payment amount or transaction data at all.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对假设不可变Web参数的外部可控制
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-2026-82189

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III. Intelligence Information for CVE-2026-82189

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Vendor Pages for CVE-2026-82189 (1)

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

CVE-2026-81568 8.7 HIGH Joomla Extension - j2commerce.com - Arbitrary file read via `task=download` in J2Store 1.0
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-472

V. Comments for CVE-2026-82189

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