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CVE-2026-10533— Openshift: openshift: non-admin user can bypass resourcequota and flood etcd with events causing cluster-wide api degradation

Quick assessment

Affected
Red Hat Red Hat OpenShift Container Platform 4
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Red Hat OpenShift Container Platform是美国红帽（Red Hat）公司的一套可帮助企业在物理、虚拟和公共云基础架构之间开发、部署和管理现有基于容器的应用程序的应用平台。 Red Hat OpenShift Container Platform存在安全漏洞，该漏洞源于已完成且重启策略为Never的Pod不计入ResourceQuota Pod限制，可能导致非特权用户创建大量事件积累在etcd中，造成API服务器性能下降。

CVSS 5.0 · Medium EPSS 0.23% · P12

Affected Version Matrix 1

VendorProduct Version RangeStatus
Red Hat Red Hat OpenShift Container Platform 4 any affected
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I. Basic Information for CVE-2026-10533

Vulnerability Information
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Vulnerability Title
Openshift: openshift: non-admin user can bypass resourcequota and flood etcd with events causing cluster-wide api degradation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat OpenShift Container Platform 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat OpenShift Container Platform是美国红帽（Red Hat）公司的一套可帮助企业在物理、虚拟和公共云基础架构之间开发、部署和管理现有基于容器的应用程序的应用平台。 Red Hat OpenShift Container Platform存在安全漏洞，该漏洞源于已完成且重启策略为Never的Pod不计入ResourceQuota Pod限制，可能导致非特权用户创建大量事件积累在etcd中，造成API服务器性能下降。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-10533

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III. Intelligence Information for CVE-2026-10533

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Same Patch Batch · Red Hat · 2026-06-01 · 3 CVEs total

CVE-2026-10118 7.8 HIGH Poppler: integer overflow in poppler splashoutputdev::tilingpatternfill leads to heap buff
CVE-2026-43958 7.8 HIGH Rrdtool: rrdtool: stack buffer overflow allows local code execution or denial of service

IV. Related Vulnerabilities

Same product: Red Hat OpenShift Container Platform 4
Same vendor: Red Hat
Same weakness: CWE-770

V. Comments for CVE-2026-10533

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