CVE-2026-27679: SAP Manage Reference Structures

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Due to missing authorization checks in the SAP S/4HANA frontend OData Service (Manage Reference Structures), an attacker could update and delete child entities via exposed OData services without proper authorization. This vulnerability has a high impact on integrity, while confidentiality and availability are not impacted.

Affected products

• SAP Manage Reference Structures: version uis4h_109 only

Published 2026-04-14. Last modified 2026-06-17.