# 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.

- **Severity:** Medium 5.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jun 2026
- **Updated:** 8 Jun 2026
- **Also known as:** GHSA-x82c-vfjw-x245

## 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 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2026-10533?

It affects 1 product.


Products: 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.

## 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](https://insights.sbomify.com/CVE-2020-27836/): Missing authorization in cluster-ingress-operator (critical 9.8)
- [CVE-2018-1085](https://insights.sbomify.com/CVE-2018-1085/): Misconfiguration in openshift-ansible (critical 9.0)
- [CVE-2026-54099](https://insights.sbomify.com/CVE-2026-54099/): Privilege escalation in Red Hat OpenShift Container Platform 4 (high 8.8)
- [CVE-2026-1784](https://insights.sbomify.com/CVE-2026-1784/): Ose-cluster-ingress-operator: remote code execution through haproxy configuration injection (high 8.8)
- [CVE-2021-20182](https://insights.sbomify.com/CVE-2021-20182/): Privilege escalation in openshift (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-10533 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-10533 in the wild and no public exploit code.

Affected product: Redhat Openshift Container Platform. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-10533/ (Markdown: https://insights.sbomify.com/CVE-2026-10533/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-10533
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-10533
- OSV: https://osv.dev/vulnerability/CVE-2026-10533

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-10533/
Summaries are generated and may contain mistakes; the official description above is the record.