CVE-2026-6383
published 2026-04-15CVE-2026-6383: A flaw was found in KubeVirt's Role-Based Access Control (RBAC) evaluation logic. The authorization mechanism improperly truncates subresource names, leading…
PriorityP432medium5.4CVSS 3.1
AVNACLPRLUINSUCLILAN
EPSS
0.15%
4.6th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| kubevirt.io | kubevirt | 0 – 1.8.1 | — |
CVSS provenance
nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
vendor_redhat5.4MEDIUM
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VulDB
Red Hat OpenShift Virtualization 4 Role-Based Access Control authorization
vuldb·2026-04-16·CVSS 5.4
CVE-2026-6383 [MEDIUM] Red Hat OpenShift Virtualization 4 Role-Based Access Control authorization
A vulnerability was found in Red Hat OpenShift Virtualization 4 and classified as critical. Impacted is an unknown function of the component Role-Based Access Control. Executing a manipulation can lead to incorrect authorization.
This vulnerability is tracked as CVE-2026-6383. The attack can be launched remotely. No exploit exists.
GHSA
KubeVirt's authorization mechanism improperly truncates subresource names
ghsa·2026-04-15
CVE-2026-6383 [MEDIUM] CWE-863 KubeVirt's authorization mechanism improperly truncates subresource names
KubeVirt's authorization mechanism improperly truncates subresource names
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.
GHSA
GHSA-j6cv-3w8p-vrg8: A flaw was found in KubeVirt's Role-Based Access Control (RBAC) evaluation logic
ghsa_unreviewed·2026-04-15
CVE-2026-6383 [MEDIUM] CWE-863 GHSA-j6cv-3w8p-vrg8: A flaw was found in KubeVirt's Role-Based Access Control (RBAC) evaluation logic
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.
Red Hat
kubevirt: KubeVirt: Unauthorized subresource access due to improper RBAC evaluation
vendor_redhat·2026-04-15·CVSS 5.4
CVE-2026-6383 [MEDIUM] CWE-863 kubevirt: KubeVirt: Unauthorized subresource access due to improper RBAC evaluation
kubevirt: KubeVirt: Unauthorized subresource access due to improper RBAC evaluation
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.
Statement: This issue has a Low impact on Red Hat products. A flaw in KubeVirt's RBAC evaluation logic improperly truncates subresource names, leading to incorrect authorization for granular subresources. This can result in legitimate users being denie
No detection rules found.
No public exploits indexed.
2026-04-15
Published