CVE-2026-16038 — MStore API < 4.21.0 - Unauthenticated Payment Bypass via Multiple Payment Gateways
The MStore API WordPress plugin before 4.21.0 does not verify the payment with the payment gateway before marking an order as paid on several of its payment-completion endpoint…
Published: 2026-08-07 · CVSS: 9.1 · CVSS 3.1
The MStore API WordPress plugin before 4.21.0 does not verify the payment with the payment gateway before marking an order as paid on several of its payment-completion endpoints, allowing an unauthenticated attacker to mark an arbitrary order fully paid without paying and obtain goods or services for free.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7