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Description

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.

PUBLISHED Reserved 2026-04-15 | Published 2026-04-15 | Updated 2026-04-15 | Assigner redhat




MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Problem types

Incorrect Authorization

Product status

Default status
affected

Timeline

2026-04-15:Reported to Red Hat.
2026-04-15:Made public.

References

access.redhat.com/security/cve/CVE-2026-6383 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2458741 (RHBZ#2458741) issue-tracking

cve.org (CVE-2026-6383)

nvd.nist.gov (CVE-2026-6383)

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