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CVE-2026-7374 — Vulnerability in kubevirt.io/kubevirt — CVE Details

CRITICAL

KubeVirt has a Link Following vulnerability

Published May 26, 2026Updated September 10, 2026Source: osv

Summary

A flaw was found in KubeVirt's virt-handler component. This vulnerability allows an authenticated OpenShift user with edit permissions in a single namespace to exploit improper symlink validation when connecting to virtual machine console sockets. By replacing the console socket with a symlink to the host's container runtime (CRI-O) socket, an attacker can hijack virt-handler's privileged connection. This enables the attacker to access any Unix socket on the host, potentially leading to full control of the node and the entire cluster.

Advisory Timeline

  • First published May 26, 2026 (139 days ago).
  • Last revised September 10, 2026 — 107 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Go
Update kubevirt.io/kubevirt to 1.7.4 or later
go get kubevirt.io/kubevirt@v1.7.4
Go
Update kubevirt.io/kubevirt to 1.8.3 or later
go get kubevirt.io/kubevirt@v1.8.3
Go
Update kubevirt.io/kubevirt to 1.6.6 or later
go get kubevirt.io/kubevirt@v1.6.6

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

Affects 1 ecosystem: go (1).

PackageEcosystemAffectedFixed In
kubevirt.io/kubevirt
go
All versions1.7.4
kubevirt.io/kubevirt
go
All versions1.8.3
kubevirt.io/kubevirt
go
All versions1.6.6

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.9 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2026-7374?
KubeVirt has a Link Following vulnerability This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.9/10).
How do I check if my project is affected by CVE-2026-7374?
CVE-2026-7374 affects kubevirt.io/kubevirt. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-7374 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.9

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-7jcp-v9w4-wjmg
GO-2026-5848

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