CLEANSTART-2026-WE26642: When http

Q: What access does an attacker need to exploit this issue?

The CVSS vector indicates that exploitation is network-based, has low attack complexity, and requires neither privileges nor user interaction.

Q: What is the expected security impact?

The reported CVSS vector indicates high confidentiality impact, with no reported integrity or availability impact.

Q: Which software is identified as affected?

The advisory identifies cleanstart/kubernetes and cleanstart/argo-workflows. It states that CVE-2026-56866 affects multiple packages.

Published Nov 11, 2026

Updated

CVE-2026-56866 affects multiple packages. When http. See references for individual vulnerability details.

Affected Software

3 affected componentsFixes available

cleanstart/kubernetes<1.34.11-r0

1.34.11-r0

cleanstart/kubernetes<1.34.13-r2

1.34.13-r2

cleanstart/argo-workflows<4.1.6-r1

4.1.6-r1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade cleanstart/kubernetes to a version that resolves this vulnerability.
Fixed in 1.34.11-r0
Upgrade
Upgrade cleanstart/kubernetes to a version that resolves this vulnerability.
Fixed in 1.34.13-r2
Upgrade
Upgrade cleanstart/argo-workflows to a version that resolves this vulnerability.
Fixed in 4.1.6-r1

Event History

Nov 11, 2026

Advisory Published

via OSV·12:38 AM

Data Sourced

via OSV·12:38 AM

DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

CVE-2026-56866

Frequently Asked Questions

What access does an attacker need to exploit this issue?

The CVSS vector indicates that exploitation is network-based, has low attack complexity, and requires neither privileges nor user interaction.

What is the expected security impact?

The reported CVSS vector indicates high confidentiality impact, with no reported integrity or availability impact.

Which software is identified as affected?

The advisory identifies cleanstart/kubernetes and cleanstart/argo-workflows. It states that CVE-2026-56866 affects multiple packages.

CLEANSTART-2026-WE26642: When http

Affected Software

Remediation

Event History

Child vulnerabilities

Frequently Asked Questions

What access does an attacker need to exploit this issue?

What is the expected security impact?

Which software is identified as affected?

Company

Resources

Contact

Frequently Asked Questions

What access does an attacker need to exploit this issue?

What is the expected security impact?

Which software is identified as affected?