CVE-2026-44745: SAP Approuter

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

SAP Approuter does not properly validate incoming request headers during the OAuth2 login flow under certain configurations. This allows an unauthenticated remote attacker to craft a malicious link which, when clicked by a victim, could lead to unauthorized access. Successful exploitation results in a high impact to the confidentiality and integrity with no impact on the availability of the application.

Affected products

• SAP Approuter: before 21.2.0 (fixed in 21.2.0)

Published 2026-07-14. Last modified 2026-09-08.