CVE-2026-18233
Medium
Description
The MStore API WordPress plugin before 4.21.1 does not verify that the order targeted by one of its delivery endpoints belongs to the requester, allowing any authenticated user, including Subscribers, to mark arbitrary orders as completed and paid without any payment being made.
SeverityMedium
CVSS6.5
Exploit probability—
ProductMStore API
PublishedAug 29, 2026
First seenAug 29, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- MStore API4.21.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| MStore API | v < 4.21.1 | 4.21.1 |
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