SAP Discloses Critical CVSS 10 Flaw in Cloud SDK for Python Allowing OAuth2 Credential Theft

A flaw in SAP's Cloud SDK for Python can send an application's OAuth2 client credentials to a server an attacker controls, SAP said in a security advisory on October 13. The flaw affects multi-tenant applications on SAP Business Technology Platform (BTP) that use the SDK, SAP's official Python client for BTP services. An attacker must be able to control the tenant subdomain, the name such an application passes to the SDK to say which tenant a request is for.

The flaw is tracked as CVE-2026-89111 and carries SAP's CVSS score of 10.0 out of 10. The advisory names version 0.45.2 , released on…