CVE-2026-16038

critical · 9.1

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.

9.1

CVSS

0.2%

EPSS (exploit prob.)

15th

EPSS percentile

2026-08-07

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-862

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-16038