CVE-2026-10533
Analyzed Analyzed - Analysis Complete
OpenShift Container Platform ResourceQuota Bypass via Pod Events

Publication date: 2026-06-01

Last updated on: 2026-06-08

Assigner: Red Hat, Inc.

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.
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Meta Information
Published
2026-06-01
Last Modified
2026-06-08
Generated
2026-06-21
AI Q&A
2026-06-01
EPSS Evaluated
2026-06-20
NVD
CVE-2026-10533
EUVD
EUVD-2026-33641
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
redhat openshift_container_platform 4.0
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
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Executive Summary

This vulnerability exists in the OpenShift Container Platform where completed pods with the restartPolicy set to Never are not counted toward ResourceQuota pod limits. Additionally, Kubernetes events are not scoped by quota. This allows a non-privileged user who can create pods in a namespace to exploit the system by generating a large volume of events that accumulate in etcd.

The accumulation of these events in etcd leads to performance degradation of the API server across the entire cluster.

Impact Analysis

The primary impact of this vulnerability is performance degradation of the API server across the cluster. Because a non-privileged user can generate a large volume of events that are not properly limited by quotas, the etcd datastore can become overloaded.

This can lead to slower response times, reduced availability, and potential disruption of cluster operations, affecting all users and workloads running on the OpenShift Container Platform.

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