OpenShift Virtualization add-on version change log

Patch updates
Patch updates are delivered automatically by IBM and don't contain any feature updates or changes in the supported add-on and cluster versions.
Release updates
Release updates contain new features or changes in the supported add-on or cluster versions. You must manually apply release updates to your cluster autoscaler add-on.

To view a list of add-ons and the supported cluster versions, run the following command or see the Supported cluster add-ons table.

ibmcloud oc cluster addon versions

Review the version history for OpenShift Virtualization.

Version 4.21

Version 4.21 - v1.0.5_4.21_351283493, released 25 June 2026

Default version

  • Updates Go to version 1.26.4.
  • kubevirt-hyperconverged-operator.v4.21.10
  • kubernetes-nmstate-operator.4.21.0-202606171653
  • node-maintenance-operator.v5.6.1

Version 4.21 - v1.0.4_4.21_347026591, released 15 June 2026

  • Resolves the following CVEs: CVE-2026-4438, CVE-2026-4046, and CVE-2026-4437.
  • Updates Go to version 1.26.4.
  • kubevirt-hyperconverged-operator.v4.21.8
  • kubernetes-nmstate-operator.4.21.0-202605270323
  • node-maintenance-operator.v5.6.1

Version 4.20

Version 4.20 - v1.0.4_4.20_347026591, released 15 June 2026

  • Resolves the following CVEs: CVE-2026-4438, CVE-2026-4046, and CVE-2026-4437.
  • Updates Go to version 1.26.4.
  • kubevirt-hyperconverged-operator.v4.20.15
  • kubernetes-nmstate-operator.4.20.0-202605130318
  • node-maintenance-operator.v5.5.0