Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are affected by a DOM-based Cross-Site Scripting vulnerability on mage-messages cookies. Successful exploitation could lead to arbitrary JavaScript execution by an unauthenticated attacker. User interaction is required for successful exploitation.
Published June 28, 2021.