CVE-2026-89105CWE-1188

CVE-2026-89105

Medium · published October 13, 2026

CVSS v3.1
4.2
EPSS
0%
Percentile
3.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.2 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00143 · 3.3th percentile
Weakness
CWE-1188 · Initialization of a Resource with an Insecure Default
Published
2026-10-13T05:16Z
References (2)
https://github.com/SAP/cloud-security-services-integration-library/security/advisories/GHSA-857v-p42q-f3qf · [email protected]https://url.sap/sapsecuritypatchday · [email protected]
EPSS history
Timeline
  • 14 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 13 OCT 00:23Z
    Improper Authentication in HybridTokenAuthenticator of SAP/cloud-security-services-integration-library
    cvelistv5
  • 13 OCT 00:23Z
    Improper Authentication in HybridTokenAuthenticator of SAP/cloud-security-services-integration-library
    cvelistv5