CVE-2021-21030: Magento

High severity, CVSS 8.1. EPSS: 5.6% 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 stored cross-site scripting (XSS) in the customer address upload feature. Successful exploitation could lead to arbitrary JavaScript execution in the victim's browser. Exploitation of this issue requires user interaction.

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.