# CVE-2026-82189

## Summary

- **CVE ID:** CVE-2026-82189
- **Severity:** HIGH
- **CVSS Score:** 8.7 (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)
- **CWE:** CWE-472, CWE-602
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 16, 2026

## 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.

## 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:** 0.25%
- **EPSS Percentile:** 16.9

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