OpenMage magento-lts before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains a stored cross-site scripting vulnerability because storefront MSRP/MAP popup and Qty Increments notice templates output product names without proper escaping. Attackers with admin product-edit rights can store a malicious product name that executes script when shoppers view product, category, or wishlist pages.