Quick answers
- Is CVE-2026-82189 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82189 being exploited in the wild.
- How severe is CVE-2026-82189?
- Informational severity, with a CVSS score of 7.5, published 15 September 2026.
- Which products and versions are affected?
- J2commerce.Com J2Store 1.0.0–3.3.2, 4.0.0–4.0.22, 4.1.0–4.1.7.
- Is there a fix for CVE-2026-82189?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-82189 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-82189?
- Check whether you run J2commerce.Com J2Store at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an unauthenticated authorization bypass in J2Store's order status update mechanism. An attacker can submit requests to mark arbitrary orders as failed without providing correct payment data, transaction identifiers, or authentication credentials. The affected versions (1.0.0–3.3.2, 4.0.0–4.0.22, 4.1.0–4.1.7) lack proper access controls on order state transitions. The attack requires only network access to the Joomla site and knowledge of an order identifier. Impact includes denial of service against the order pipeline, disruption of revenue capture, operational confusion (unwarranted refunds and cancellations), and increased customer support load. No patch information is provided in the advisory.
Affected products
- j2commerce.com J2Store 1.0.0–3.3.2, 4.0.0–4.0.22, 4.1.0–4.1.7
Timeline
- 2026-09-15: disclosed