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CVE-2026-82189

J2Store extension for Joomla · Vulnerability

CVSS 4.0 8.7 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-82189

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-82189

Published

J2Store extension for Joomla

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "defaultStatus": "unaffected",
                    "product": "J2Store extension for Joomla",
                    "vendor": "j2commerce.com",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.0.0-3.3.22"
                        },
                        {
                            "status": "affected",
                            "version": "4.0.0-4.0.22"
                        },
                        {
                            "status": "affected",
                            "version": "4.1.0-4.1.7"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON