CVE-2026-73269 Privilege escalation in multicluster engine for Kubernetes 2.10
A local user can escalate privileges from namespace-local to cluster-wide by creating a specific resource, gaining access to secrets and cluster management.
- 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-2026-73269?
CVE-2026-73269 is a critical vulnerability in Red Hat multicluster engine for Kubernetes 2.10, 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 the cluster-curator-controller component. A local user, by creating a ClusterCurator resource with a specific naming convention, can trigger the creation of a cluster-scoped ClusterRoleBinding. This allows the user to escalate their privileges from namespace-local access to cluster-wide control. This privilege escalation grants broad permissions, including the ability to access and manipulate secrets, manage cluster actions, and delete hosted clusters or node pools.
Weakness: CWE-269
Which versions are affected by CVE-2026-73269?
How do I fix CVE-2026-73269?
No fix has been published for CVE-2026-73269 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-73269 being exploited?
There is no known exploitation of CVE-2026-73269 in the wild and no public exploit code.
Sources
Also known as GHSA-h2w9-5qx3-frqq.