CVE-2021-47933: Mstore API

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

WordPress MStore API 2.0.6 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious files by sending POST requests to the REST API endpoint. Attackers can upload PHP files with arbitrary names to the config_file endpoint to achieve remote code execution on the server.

Affected products

• Mstore Mstore API: version 2.0.6 only

Published 2026-05-10. Last modified 2026-07-25.