CVE-2026-94462

18th percentile - higher than 18% of all known CVEs

Spree is an open source e-commerce solution built with Ruby on Rails. From 5.4.0 until 5.4.4 and 5.5.4, PATCH /api/v3/store/carts/:id/associate in Spree::Api::V3::Store::CartsController#associate uses find_cart_for_association to locate a cart by prefixed_id but does not require a cart token or otherwise verify possession of the selected guest cart. An authenticated customer can derive reversible prefixed cart IDs, associate an eligible guest cart with the attacker's account, and receive billing and shipping address data from the cart. Exploitation requires a guest cart with address data on a store that does not require login for checkout, and reassignment can also disrupt the guest's in-progress cart. This issue is fixed in versions 5.4.4 and 5.5.4.

An attacker can gain access to customer address data, violating privacy and potentially leading to personal data theft. Additionally, it can disrupt the shopping process of users.

It is recommended to upgrade Spree to version 5.4.4 or 5.5.4 to eliminate the vulnerability.