CVE-2026-67567
Received Received - Intake

HelmRelease Privilege Escalation in multicloud-operators-subscription

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: redhat-SADP

Description
A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a tenant, who has the ability to create HelmRelease custom resources (CRs), to bypass existing security controls. The system's HelmRelease controller processes Helm chart templates using its own elevated ServiceAccount privileges without proper validation. This enables the tenant to deploy arbitrary resources across the entire cluster, leading to a significant security compromise.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-21
AI Q&A
2026-08-21
EPSS Evaluated
N/A
NVD
CVE-2026-67567
EUVD
EUVD-2026-63589

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
redhat multicloud-operators-subscription *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-441 The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.

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Executive Summary

This vulnerability is in the multicloud-operators-subscription component. It allows a tenant with permission to create HelmRelease custom resources to bypass security controls. The HelmRelease controller uses elevated privileges to process Helm chart templates without proper validation, enabling the tenant to deploy arbitrary resources across the entire cluster.

Impact Analysis

An attacker with the ability to create HelmRelease CRs could gain full control over the cluster by deploying malicious resources. This could lead to data breaches, unauthorized access, or disruption of services, depending on the cluster's configuration and the attacker's goals.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, or other regulations due to unauthorized access or data breaches. Organizations may face legal penalties, reputational damage, and loss of trust if such incidents occur.

Mitigation Strategies

Immediately restrict the ability of tenants to create HelmRelease custom resources (CRs) to prevent unauthorized resource deployment. Review and remove unnecessary elevated ServiceAccount privileges from the HelmRelease controller to limit its access across the cluster.

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