Medium severity · published Oct 13, 2026
CVE-2026-89105
Improper Authentication in HybridTokenAuthenticator of SAP/cloud-security-services-integration-library
4.2
CVSS
0.1%
EPSS
No
On KEV
Description
The HybridTokenAuthenticator component of the SAP/cloud-security-services-integration-library accepts tokens from unintended ambient IAS/XSUAA bindings, potentially allowing unauthorized access. This vulnerability allows an attacker to gain unauthorized access to the system by using tokens that should not be accepted, leading to a breach of security.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
SAP/cloud-security-services-integration-library · SAP_SE
>=3.6.6; <4.1.1 · source: vendor
Affected product
SA
SAP/cloud-security-services-integration-library
SAP_SE