CVE-2026-6383
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability4. percentile0.2%
ProductKubevirt.io/kubevirt
PublishedApr 15, 2026
First seenApr 15, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kubevirt.io/kubevirtGo | v ≤ 1.8.1, No range specified | — |
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