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Joomla Extension - j2commerce.com - Anonymous cart-record tampering via inherited FOF save task in J2Store 1.0.0-3.3.21, 4.0.0-4.0.21, 4.1.0-4.1.6 - fof.xml grants the carts view's tasks a wildcard true ACL, and FOF only enforces CSRF tokens on back-end HTML requests, not on front-end format=raw requests. J2StoreControllerCarts already scoped remove() to the caller's own session, but never overrode the generic FOF save task, so it remained reachable to insert new cart rows with an attacker-chosen user_id/session_id, or overwrite an existing row by id.