CVE-2026-6383

mediumpriority · track · 0OT risk · elevatedEPSS 0.002 · 4 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.15% (4th) EPSS

CVSS 5.4 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · osv

EPSS · scored 2026-10-28

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

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · ENISA EU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · secalert@redhat.com USexploitability 2.8 · impact 2.5

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · OSV

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-863USCWE-863US

affected products (2)

Products and version ranges known to be affected.

Go kubevirt.io/kubevirt≤ 1.8.1osvUSpkg:golang/kubevirt.io/kubevirt
Go kubevirt.io/kubevirtall versionsosvUSpkg:golang/kubevirt.io/kubevirt

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-j6cv-3w8p-vrg8KubeVirt's authorization mechanism improperly truncates subresource names2026-04-15ghsa · osvUS
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.
GO-2026-5450KubeVirt's authorization mechanism improperly truncates subresource names in kubevirt.io/kubevirt2026-06-25vendor · osvUS
KubeVirt's authorization mechanism improperly truncates subresource names in kubevirt.io/kubevirt

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv NVD CVE.org MITRE

published 2026-04-15modified 2026-10-26

references (7)

External citations — patches, advisories, analysis.

scry

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