CVE-2026-31821: medium-severity vulnerability in Sylius
Sylius is Missing Authorization in API v2 Add Item Endpoint
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.2%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products
Sylius · SyliusRelated CVEs — Sylius
In the same product, most dangerous first.
CVE-2022-24743HIGHInsufficient Session Expiration in SyliusEPSS 1.3%CVE-2022-24749MEDIUMBasic Cross-site Scripting and Unrestricted Upload of File with Dangerous Type in SyliusEPSS 1.1%CVE-2022-24733MEDIUMImproper Restriction of Rendered UI Layers or Frames in SyliusEPSS 0.9%CVE-2021-32720MEDIUMList of order ids, number, items total and token value exposed for unauthorized uses via new APIEPSS 0.9%CVE-2022-24742MEDIUMExposure of Sensitive Information Due to Incompatible Policies in SyliusEPSS 0.8%CVE-2019-16768LOWInternal exception message exposure for login action in SyliusEPSS 0.7%