CVE-2026-6383

MEDIUM EPSS 4.6%

Published Apr 15, 20262mo ago · Modified Jun 17, 20261w ago

5.4 CVSS 3.1

Medium

Published Apr 15, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

5.4

Exploitability

2.8

Impact

2.5

Vector string

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

Threat Intelligence

EPSS Exploit Probability

4.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

References 2

access.redhat.com https://access.redhat.com/security/cve/CVE-2026-6383
bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2458741

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.