CVE-2026-10533 Denial of service in Red Hat OpenShift Container Platform 4
A non-privileged user can bypass resource quotas to flood etcd with events, causing cluster-wide API server performance degradation.
- 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-2026-10533?
CVE-2026-10533 is a medium-severity denial of service vulnerability in Redhat Openshift Container Platform, published on 1 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw was found in OpenShift Container Platform. Completed pods with restartPolicy: Never do not count toward ResourceQuota pod limits, and Kubernetes events are not quota-scoped. A non-privileged user who can create pods in a namespace can exploit this to generate a large volume of events that accumulate in etcd, causing API server performance degradation across the cluster.
Weakness: CWE-770
Which versions are affected by CVE-2026-10533?
It affects 1 product.
Products include Redhat Openshift Container Platform.
How do I fix CVE-2026-10533?
No fix has been published for CVE-2026-10533 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-10533 being exploited?
There is no known exploitation of CVE-2026-10533 in the wild and no public exploit code.
Other vulnerabilities in Redhat Openshift Container Platform
- CVE-2020-27836 Missing authorization in cluster-ingress-operator
- CVE-2018-1085 Misconfiguration in openshift-ansible
- CVE-2026-54099 Privilege escalation in Red Hat OpenShift Container Platform 4
- CVE-2026-1784 Ose-cluster-ingress-operator: remote code execution through haproxy configuration injection
- CVE-2021-20182 Privilege escalation in openshift
Sources
Also known as GHSA-x82c-vfjw-x245.