SAP Discloses Critical CVSS 10 Flaw in Cloud SDK for Python Allowing OAuth2 Credential Theft
thehackernews.com Oct 13, 2026

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.