CVE-2026-89111

CRITICALCVSS 10.0

Description

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.

Timeline

Published:October 13th, 2026 1:16 AM

Last modified:October 15th, 2026 8:38 PM

CVSS Scoring

CVSS v3: 10.0 (CRITICAL)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Weaknesses (CWE)

CWE-918

References & Reports

Advisories, patches, and third-party reports

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

Source: NIST NVD · Data may lag official sources by up to one minute