A stored cross-site scripting vulnerability exists in the product comments field of Magento Open Source prior to 1.9.4.2, and Magento Commerce prior to 1.14.4.2, Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2. An authenticated user with privileges to the Return Product comments field can inject malicious javascript.

Magento 2 Community Edition XSS Vulnerability