SAP Discloses Critical CVSS 10 Flaw in Cloud SDK for Python Allowing OAuth2 Credential Theft
AI-summarised brief · reviewed before publication
SAP disclosed a critical CVSS 10 flaw (CVE‑2026‑89111) in its Cloud SDK for Python that could send OAuth2 client credentials to an attacker‑controlled server when an application supplies a malicious tenant subdomain. The vulnerability affects multi‑tenant apps on SAP Business Technology Platform using SDK versions 0.45.2 and earlier, with a fix added in 0.45.2. Subsequent releases (0.53.0‑0.55.0) temporarily omitted the check, but 0.55.1 and later re‑implemented it. SAP recommends upgrading or validating tenant names before SDK use.
💡 Why It Matters
- · The flaw exposes OAuth2 secrets to attackers, enabling unauthorized token acquisition and potential data breaches.
- · Prompt patching is essential to safeguard multi‑tenant SAP BTP deployments.