CVE-2021-21014: Magento

Critical severity, CVSS 9.1. EPSS: 4.2% chance of exploitation in the next 30 days.

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to a file upload restriction bypass. Successful exploitation could lead to arbitrary code execution by an authenticated attacker. Access to the admin console is required for successful exploitation.

Affected products

• Magento Magento: before 2.3.6 (fixed in 2.3.6); version 2.3.6 only; version 2.4.0 only; version 2.4.1 only

Published 2021-02-11. Last modified 2026-06-17.