Vulnerability · Published Aug 29, 2026 · Assigned by WPScan
CVE-2026-18233MStore API < 4.21.1 - Subscriber+ Arbitrary Order Completion
Medium 6.5
In plain English
A medium-severity missing authorization in MStore API from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 77.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | MStore API | 0 – before 4.21.1 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
References
- https://wpscan.com/vulnerability/241c0394-8dfa-475c-a91b-e2b5e47add53/ exploit, vdb-entry, technical-description