CVE-2026-89105 Improper Authentication in HybridTokenAuthenticator of SAP/cloud-security-services-integration-library
Attackers can gain unauthorized access by using tokens from unintended bindings in the SAP security integration library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-89105?
CVE-2026-89105 is a medium-severity authentication bypass vulnerability in SAP_SE SAP/cloud-security-services-integration-library, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-1188
Which versions are affected by CVE-2026-89105?
How do I fix CVE-2026-89105?
No fix has been published for CVE-2026-89105 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-89105 being exploited?
There is no known exploitation of CVE-2026-89105 in the wild and no public exploit code.
Sources
Also known as GHSA-2v6r-vpfh-4h7c, GHSA-857v-p42q-f3qf.