CVE-2026-89111

The SAP Cloud SDK for Python contains an OAuth2 SSRF vulnerability affecting multi-tenant BTP applications. An attacker who controls the tenant_subdomain parameter can redirect OAuth2 token requests to an attacker-controlled server, causing client credentials to be exfiltrated.

Score

CVSS 3.1 10.0 Critical

Status

Awaiting Analysis - cna@sap.com

Published

2026-10-13

Last modified

2026-10-15

Weaknesses

CWE-918

Affected products

• Sap Cloud (Sap Se)

References

• https://github.com/SAP/cloud-sdk-python/security/advisories/GHSA-4mv3-jxxm-9cx2
• https://url.sap/sapsecuritypatchday