CVE-2026-13208

A flaw was found in KubeVirt's virt-handler domain notify server. The gRPC handlers for HandleDomainEvent and HandleK8SEvent derive the VMI identity (namespace/name) solely from the request body without validating it against the connection's origin. Each virt-launcher pod connects through a per-VMI pipe socket, but no identity tag is propagated from the pipe path to the server handlers. This allows a compromised virt-launcher process to send forged domain lifecycle events for any other VMI scheduled on the same node, causing virt-handler to erroneously update that VMI's state and disrupt its lifecycle management.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - secalert@redhat.com

Published

2026-06-24

Last modified

2026-10-25

Weaknesses

CWE-287

Affected products

• Kubevirt (Kubevirt)
• Container Native Virtualization (Redhat)
• Openshift Virtualization (Redhat)

References

• https://access.redhat.com/security/cve/CVE-2026-13208
• https://bugzilla.redhat.com/show_bug.cgi?id=2492220