Symlink Validation Flaw in KubeVirt's virt-handler Component Affects OpenShift
CVE-2026-7374

9.9CRITICAL

Key Information:

Vendor

Red Hat
Status
Red Hat Openshift Virtualization 4
Vendor
CVE Published:
26 May 2026

What is CVE-2026-7374?

A flaw in the virt-handler component of KubeVirt allows authenticated OpenShift users with edit permissions to exploit improper symlink validation when accessing virtual machine console sockets. By substituting the console socket with a symlink to the host's container runtime (CRI-O) socket, attackers can hijack the privileged connection of virt-handler. This may grant them unauthorized access to Unix sockets on the host, potentially compromising the integrity and security of the entire node and cluster.

References

https://access.redhat.com/security/cve/CVE-2026-7374
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2463728
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Sarah Bennert (Red Hat) and Stoyan Nikolov (Red Hat).
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