Red Hat OpenShift Virtualization 4 Role-Based Access Control authorization

Summaryinfo

A vulnerability was found in Red Hat OpenShift Virtualization 4. It has been classified as critical. The affected element is an unknown function of the component Role-Based Access Control. The manipulation leads to authorization. This vulnerability is listed as CVE-2026-6383. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Red Hat OpenShift Virtualization 4. It has been rated as critical. This issue affects an unknown code block of the component Role-Based Access Control. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in KubeVirt's Role-Based Access Control (RBAC) evaluation logic. The authorization mechanism improperly truncates subresource names, leading to incorrect permission evaluations. This allows authenticated users with specific custom roles to gain unauthorized access to subresources, potentially disclosing sensitive information or performing actions they are not permitted to do. Additionally, legitimate users may be denied access to resources.

It is possible to read the advisory at access.redhat.com. The identification of this vulnerability is CVE-2026-6383 since 04/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/16/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Virtualization Software

Vendor

• Red Hat

Name

• OpenShift Virtualization

Version

• 4

License

• open-source

Website

• Vendor: https://www.redhat.com/

CPE 2.3info

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CPE 2.2info

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