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

State: Published
Severity: 8.7 High
Published: Sep 15, 2026
Updated: Sep 16, 2026
Reserved: Aug 28, 2026

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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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	Joomla

Weaknesses

CWE-472 External Control of Assumed-Immutable Web Parameter
CWE-602 Client-Side Enforcement of Server-Side Security

Affected Products

Product	Versions
J2Store extension for Joomlaj2commerce.com	1.0.0-3.3.22Affected 4.0.0-4.0.22Affected 4.1.0-4.1.7Affected

References

https://www.j2commerce.com/product

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