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OpenAdvisories
Medium · 6.9 CVE-2026-31821 EUVD-2026-10914GHSA-wjmg-4cq5-m8hg

Sylius is Missing Authorization in API v2 Add Item Endpoint

Published Mar 10, 2026 · Updated Mar 11, 2026 · Assigned by GitHub_M

Description

Sylius is an Open Source eCommerce Framework on Symfony. The POST /api/v2/shop/orders/{tokenValue}/items endpoint does not verify cart ownership. An unauthenticated attacker can add items to other registered customers' carts by knowing the cart tokenValue. An attacker who obtains a cart tokenValue can add arbitrary items to another customer's cart. The endpoint returns the full cart representation in the response (HTTP 201). The issue is fixed in versions: 2.0.16, 2.1.12, 2.2.3 and above.

Affected products

VendorProductAffectedFixed
Sylius Sylius >= 2.2.0, < 2.2.3, >= 2.1.0, < 2.1.12, >= 2.0.0, < 2.0.16 —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist sylius/sylius >= 2.0.0, < 2.0.16 2.0.16 GHSA-wjmg-4cq5-m8hg
Packagist sylius/sylius >= 2.1.0, < 2.1.12 2.1.12 GHSA-wjmg-4cq5-m8hg
Packagist sylius/sylius >= 2.2.0, < 2.2.3 2.2.3 GHSA-wjmg-4cq5-m8hg

References