CVE-2026-74926 MultiVendorX 5.0.0 - 5.0.15 - Subscriber+ Arbitrary Store Data and Ownership Overwrite via stores REST Endpoint
Authenticated users can overwrite arbitrary store details and ownership via REST API due to missing authorization checks in MultiVendorX plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-74926?
CVE-2026-74926 is a high-severity missing authorization vulnerability in Unknown MultiVendorX, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The MultiVendorX WordPress plugin before 5.0.16 does not verify that a user owns the store they are acting on in one of its REST API routes, allowing any authenticated user, such as a subscriber, to overwrite any store's details and payout settings and to replace the record of who owns it.
Weakness: CWE-862
Which versions are affected by CVE-2026-74926?
How do I fix CVE-2026-74926?
No fix has been published for CVE-2026-74926 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-2026-74926 being exploited?
There is no known exploitation of CVE-2026-74926 in the wild and no public exploit code.
Sources
Also known as GHSA-r99r-q28p-h387.