CVE-2026-6383
Kubevirt: kubevirt: unauthorized subresource access due to improper rbac evaluation
- State
- Published
- Severity
- 5.4 Medium
- Published
- Apr 15, 2026
- Updated
- Apr 15, 2026
- Reserved
- Apr 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N | redhat |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
Red Hat OpenShift Virtualization 4Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-6383vdb-entry
- RHBZ#2458741issue-tracking
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