CVE-2026-82189 Missing authorization in J2Store extension for Joomla
Unauthenticated attackers can mark any order as failed, disrupting revenue and causing operational confusion in J2Store.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82189?
CVE-2026-82189 is a high-severity missing authorization vulnerability in j2commerce.com J2Store extension for Joomla, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-82189?
How do I fix CVE-2026-82189?
No fix has been published for CVE-2026-82189 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-82189 being exploited?
There is no known exploitation of CVE-2026-82189 in the wild and no public exploit code.
Sources
Also known as GHSA-739c-vch3-5f25.