CVE-2026-19625 IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities
Attackers can access endpoints secured by different OIDC providers using tokens from another provider when token introspection caching is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19625?
CVE-2026-19625 is a medium-severity authentication bypass vulnerability in IBM Enterprise Build of Quarkus, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
When a Quarkus application has multiple endpoints secured by individual OIDC provider tenants, such as "/oidc-provider1" that is secured by the OIDC Provider 1 and "/oidc-provider2" that is secured by the OIDC Provider 2, and an optional token introspection cache is also enabled, then a valid token issued by the OIDC Provider 1 that can be used to access "/oidc-provider1" can also be used to access "/oidc-provider2" that is secured by another OIDC Provider 2.
Weakness: CWE-284
Which versions are affected by CVE-2026-19625?
How do I fix CVE-2026-19625?
No fix has been published for CVE-2026-19625 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-2026-19625 being exploited?
There is no known exploitation of CVE-2026-19625 in the wild and no public exploit code.