CVE-2026-89111 PUBLISHED

OAuth2 SSRF vulnerability in SAP Cloud SDK for Python

Assigner: sap
Reserved: 10.09.2026 Published: 13.10.2026 Updated: 13.10.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS Score: 10

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	SAP_SE
Product	SAP Cloud
Versions	Default: unaffected Version sap-cloud-sdk < 0.45.2 is affected

References

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

CVE-2026-89111 PUBLISHED

OAuth2 SSRF vulnerability in SAP Cloud SDK for Python

Metrics

Product Status

References

Problem Types