Auth bypass in Spree
CVE-2026-94462
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Spree — versions >= 5.4.0, < 5.4.4, >= 5.5.0, < 5.5.4
Weakness classification (CWE)
References
- github.com/spree/spree/security/advisories/GHSA-4825-p4xm-pcf2
- github.com/spree/spree/pull/14314
- github.com/spree/spree/commit/8834230a1f47bb5988f23f45dbd162776cf592bd
- github.com/spree/spree/commit/af0d1a2d582a60d179de65b7d3ea024cb26426a8
- github.com/spree/spree/releases/tag/v5.4.4
- github.com/spree/spree/releases/tag/v5.5.4
Frequently asked questions
- What is CVE-2026-94462?
- CVE-2026-94462 is a high-severity vulnerability in Spree, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-09-22.
- How severe is CVE-2026-94462?
- High severity. CVSS v3 base score is 7.1 out of 10.