CVE-2026-16041

MStore API < 4.21.0 - Unauthenticated Product Review Creation

The MStore API WordPress plugin before 4.21.0 does not perform authorization or purchase-ownership checks on its REST product-review creation route, allowing an unauthenticated attacker to create WooCommerce product reviews with an attacker-chosen reviewer name, email and star rating on stores configured to accept reviews only from verified owners.

Affected

MStore API

CVSS v3.1 CNA

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

EPSS

0.36% chance of exploitation in the next 30 days, 28th percentile

Published

2026-08-07

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/0e7d8a17-0901-45b5-959c-2c1ef1316047/

References

• CVE Record
• NVD entry