CVE-2026-70398 Information disclosure in Red Hat Advanced Cluster Management for Kubernetes 2.11
An authenticated tenant can redirect sensitive spoke cluster bearer tokens to a controlled namespace, leading to information disclosure and security policy bypass.
- 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-2026-70398?
CVE-2026-70398 is a critical vulnerability in Red Hat Advanced Cluster Management for Kubernetes 2.11, published on 12 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw was found in multicloud-integrations, a component of Red Hat Advanced Cluster Management (RHACM). This vulnerability allows an authenticated user, referred to as a tenant, to manipulate the GitOpsCluster controller. By exploiting this, a tenant can redirect sensitive spoke cluster bearer tokens from secure locations to a namespace they control. This unauthorized access to tokens can lead to the disclosure of critical information and bypass security policies within ArgoCD AppProjects.
Weakness: CWE-441
Which versions are affected by CVE-2026-70398?
How do I fix CVE-2026-70398?
No fix has been published for CVE-2026-70398 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-70398 being exploited?
There is no known exploitation of CVE-2026-70398 in the wild and no public exploit code.
Sources
Also known as GHSA-cjw2-r57r-pwvf.