CVE-2026-18233
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.
- Published Aug 29, 2026
- CVSS 6.5 medium
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available