CVE-2026-16038 — MStore API < 4.21.0 - Unauthenticated Payment Bypass via Multiple Payment Gateways

CVE-2026-16038

MStore API < 4.21.0 - Unauthenticated Payment Bypass via Multiple Payment Gateways PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Unknown / MStore API	affected 0 before 4.21.0

CWE

No CWE identifiers supplied.

References

https://wpscan.com/vulnerability/6321d247-39c7-43a6-a528-202e1118a5d5/

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.