CVE-2026-16039

MStore API < 4.21.0 - Subscriber+ Order and Customer PII Disclosure via IDOR

Published Aug 7, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mstore
Mstore mstore Api
Wordpress
Wordpress wordpress
Vendors & Products Mstore
Mstore mstore Api
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Weaknesses CWE-284
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-284
CWE-639
Type Values Removed Values Added
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.
Title MStore API < 4.21.0 - Subscriber+ Order and Customer PII Disclosure via IDOR
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Aug 7, 2026, 6:05 PM
Reserved
Jul 17, 2026, 9:20 AM
Status
Deferred
Published
Aug 7, 2026, 6:16 AM
Modified
Aug 26, 2026, 4:31 PM