Token Acceptance Vulnerability in SAP Cloud Security Services Integration Library
CVE-2026-89105

4.2MEDIUM

Key Information:

Vendor

SAP
Status
SAP/cloud-security-services-integration-library
Vendor
CVE Published:
13 October 2026

What is CVE-2026-89105?

The HybridTokenAuthenticator component in SAP's cloud-security-services-integration-library is susceptible to a flaw where it erroneously accepts tokens associated with unintended ambient IAS/XSUAA bindings. This oversight can be exploited by attackers to gain unauthorized access, potentially compromising the integrity and confidentiality of the system. It is crucial for users of this product to implement the recommended mitigations to secure their applications against unauthorized token use.

Affected Version(s)

SAP/cloud-security-services-integration-library >=3.6.6 >= 3.6.6

SAP/cloud-security-services-integration-library <4.1.1 < 4.1.1

References

https://github.com/SAP/cloud-security-services-integratio...
https://url.sap/sapsecuritypatchday

CVSS V3.1

Score:
4.2
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.