CVE-2026-16038

UNKNOWN 0.0

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

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	unknown
Product	mstore api
Published	Aug 7, 2026

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Affected Versions

Unknown / MStore API

0 < 4.21.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Sai Praneeth Koti WPScan