High [CVE-2026-13622] virt-handler migration proxy follows symlinks allowing container escape to host
This high-severity Red Hat Linux advisory covers CVE-2026-13622 affecting Red Hat OpenShift Virtualization 4.
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Summary
virt-handler migration proxy follows symlinks allowing container escape to host. Red Hat rates this important (CVSS 8.8).
Weakness: CWE-22.
Affected product named by the advisory: Red Hat OpenShift Virtualization 4.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- Restrict pods/exec permissions in namespaces that run virtual machines. The pods/exec RBAC permission is required for the attack — removing it from VM operator roles prevents exploitation. Additionally, enable Kubernetes audit logging and monitor for kubectl exec commands targeting virt-launcher pods, especially during live migration events.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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