Vulnerability · Published Aug 7, 2026 · Assigned by WPScan
CVE-2026-16039MStore API < 4.21.0 - Subscriber+ Order and Customer PII Disclosure via IDOR
Medium 6.5
In plain English
A medium-severity authorization bypass via user-controlled key in MStore API from Unknown. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 72.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
The MStore API WordPress plugin before 4.21.0 does not restrict its vendor-orders endpoint to the caller's own orders, allowing any authenticated user, including Subscribers, to read every WooCommerce order in the store together with each customer's personal information.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | MStore API | 0 – before 4.21.0 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://wpscan.com/vulnerability/85c6ff37-4761-420c-970f-05b2c50d3b28/ exploit, vdb-entry, technical-description