CVE-2026-82190 Weak cryptography in J2Store extension for Joomla
Attackers with the Joomla secret can forge order tokens to access any order details and digital downloads without authorization.
- 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-2026-82190?
CVE-2026-82190 is a medium-severity 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 - Predictable/forgeable order access token in J2Store 1.0.0-3.3.2, 4.0.0-4.0.22, 4.1.0-4.1.7 - Anyone who obtains the site's Joomla `secret` can compute a valid access token for *any* order on the site without ever having placed one, gaining guest access to that order's details and any purchased digital downloads. Because the token is never rotated, this exposure persists indefinitely even after the underlying secret-disclosure vector is patched, unless the Joomla secret itself is also rotated. The attack complexity (`AC:H`) is high because it depends on the secret already being known through a separate vector; it is not directly exploitable by an anonymous visitor with no other foothold.
Weakness: CWE-1241
Which versions are affected by CVE-2026-82190?
How do I fix CVE-2026-82190?
No fix has been published for CVE-2026-82190 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82190 being exploited?
There is no known exploitation of CVE-2026-82190 in the wild and no public exploit code.
Sources
Also known as GHSA-9p2w-4fq9-q3p2.