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CVE-2026-13622

8.8 · HIGH

A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy.

Published Aug 12, 2026CWE-22EPSS 0.20%

Overview

CVE-2026-13622 is a high-severity vulnerability. It was published on August 12, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy. During live migration, virt-handler dials Unix sockets inside the target virt-launcher pod via /proc/<pid>/root/ paths using net.Dial() without symlink protection. These socket paths reside in qemu-owned directories writable by the virt-launcher user. An attacker with namespace edit and pods/exec permissions can replace a migration proxy socket with a symlink to the host CRI-O socket. Because virt-handler runs as root in the host mount namespace, absolute symlink targets resolve against the host filesystem, and the bidirectional io.Copy proxy relays attacker-controlled bytes to the container runtime, enabling full node compromise.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/errata/RHEA-2026:53670Refaccess.redhat.com/errata/RHSA-2026:51031Refaccess.redhat.com/errata/RHSA-2026:53655Refaccess.redhat.com/errata/RHSA-2026:53671Refaccess.redhat.com/errata/RHSA-2026:53684Refaccess.redhat.com/errata/RHSA-2026:53721Refaccess.redhat.com/errata/RHSA-2026:53728Refaccess.redhat.com/errata/RHSA-2026:53763Refaccess.redhat.com/errata/RHSA-2026:53797Refaccess.redhat.com/errata/RHSA-2026:53826

How CyberStrike helps

Frequently asked questions

What is CVE-2026-13622?

CVE-2026-13622 is a high-severity vulnerability. It was published on August 12, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-13622?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-13622?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-13622?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-13622 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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