CVE-2026-16605 MultiVendorX < 5.0.11 - Store Owner+ Cross-Vendor Store Takeover and Deletion via Missing Authorization
Authenticated vendors can view, modify, or delete other vendors' stores due to missing authorization checks in the REST API.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16605?
CVE-2026-16605 is a high-severity missing authorization vulnerability in Unknown MultiVendorX, published on 5 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The MultiVendorX WordPress plugin before 5.0.11 does not verify that the store targeted through its REST API belongs to the requesting vendor, allowing an authenticated vendor (Store Owner and above) to view, take over, permanently delete, or modify any other vendor's store on the marketplace.
Weakness: CWE-862
Which versions are affected by CVE-2026-16605?
How do I fix CVE-2026-16605?
No fix has been published for CVE-2026-16605 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-2026-16605 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16605 exists.
Sources
Also known as GHSA-w6w9-w293-w3m5.