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Red Hat CVE-2026-6383

| EUVDEUVD-2026-23009 MEDIUM
Incorrect Authorization (CWE-863)
2026-04-15 redhat GHSA-j6cv-3w8p-vrg8
Authentication Bypass Red Hat Suse
5.4
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
SUSE
MEDIUM
qualitative
Red Hat
5.4 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Patch released
Apr 19, 2026 - 14:30 nvd
Patch available
EUVD ID Assigned
Apr 15, 2026 - 18:45 euvd
EUVD-2026-23009
CVE Published
Apr 15, 2026 - 18:22 nvd
MEDIUM 5.4

DescriptionCVE.org

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.

Analysis

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.

Same weakness CWE-863 – Incorrect Authorization

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Same technique Authentication Bypass

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Vendor StatusVendor

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Micro 5.3 Fixed
SUSE Linux Enterprise Micro 5.4 Fixed
SUSE Linux Enterprise Micro 5.5 Fixed
SUSE Linux Enterprise Module for Containers 15 SP7 Fixed

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CVE-2026-6383 vulnerability details – vuln.today
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