CVE-2026-31821
MEDIUM WAF: Low
CVSS 5.3
Published: 2026-03-10
CWE-862
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.
WAF Coverage Analysis
Missing Authorization
Low WAF Coverage
OWASP: A01:2021 Broken Access Control
Affected Software
| Vendor | Product | Version |
|---|---|---|
| sylius | sylius | 2.0.0 - 2.0.16 |
| sylius | sylius | 2.1.0 - 2.1.12 |
| sylius | sylius | 2.2.0 - 2.2.3 |
References
- github.com (Mitigation, Vendor Advisory)