--- name: openshift-cl-add-ons-openshift-virtualization title: OpenShift Virtualization add-on version change log description: Review the version history for OpenShift Virtualization. last-updated: 2026-08-10 --- > ## Documentation Index > The table of contents for this documentation set is at https://cloud.ibm.com/docs/openshift?format=markdown > The index for all IBM Cloud docs is at: https://cloud.ibm.com/docs/llms.txt > Use these files to discover more information as needed. # OpenShift Virtualization add-on version change log {: #cl-add-ons-openshift-virtualization} 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](https://cloud.ibm.com/docs/openshift?topic=openshift-supported-cluster-addon-versions&format=markdown). ```sh ibmcloud oc cluster addon versions ``` {: pre} Review the version history for OpenShift Virtualization. {: shortdesc} ## Version 4.21 {: #cl-add-ons-openshift-virtualization-4.21} ### Version 4.21 - v1.0.8_4.21, released 10 August 2026 {: #cl-add-ons-openshift-virtualization-v108_421} [Default version]{: tag-green} - Updates Go to version `1.26.5`. - Update cpu and memory requests/limits for ibm-openshift-virt-operator pods - kubevirt-hyperconverged-operator.v4.21.13 - kubernetes-nmstate-operator.4.21.0-202607221131 - node-maintenance-operator.v5.6.1 ### Version 4.21 - v1.0.7_4.21_360518333, released 06 August 2026 {: #cl-add-ons-openshift-virtualization-v107_421_360518333} - Updates Go to version `1.26.5`. - Populate RedHat operators version in IBMOpenShiftVirtualization CR - kubevirt-hyperconverged-operator.v4.21.13 - kubernetes-nmstate-operator.4.21.0-202607221131 - node-maintenance-operator.v5.6.1 - Resolves the following Prisma CVEs: [CVE-2026-25934](https://nvd.nist.gov/vuln/detail/CVE-2026-25934){: external}, [CVE-2026-34165](https://nvd.nist.gov/vuln/detail/CVE-2026-34165){: external}, [CVE-2026-44973](https://nvd.nist.gov/vuln/detail/CVE-2026-44973){: external}, [CVE-2026-41506](https://nvd.nist.gov/vuln/detail/CVE-2026-41506){: external}, [CVE-2026-45022](https://nvd.nist.gov/vuln/detail/CVE-2026-45022){: external}, [CVE-2026-44740](https://nvd.nist.gov/vuln/detail/CVE-2026-44740){: external}, [CVE-2026-45571](https://nvd.nist.gov/vuln/detail/CVE-2026-45571){: external}, [CVE-2026-33762](https://nvd.nist.gov/vuln/detail/CVE-2026-33762){: external}, [CVE-2026-53488](https://nvd.nist.gov/vuln/detail/CVE-2026-53488){: external}, [CVE-2026-50163](https://nvd.nist.gov/vuln/detail/CVE-2026-50163){: external}, [CVE-2026-45570](https://nvd.nist.gov/vuln/detail/CVE-2026-45570){: external}, [CVE-2026-49478](https://nvd.nist.gov/vuln/detail/CVE-2026-49478){: external}, [CVE-2026-39822](https://nvd.nist.gov/vuln/detail/CVE-2026-39822){: external}, [CVE-2026-41178](https://nvd.nist.gov/vuln/detail/CVE-2026-41178){: external}, [CVE-2026-47262](https://nvd.nist.gov/vuln/detail/CVE-2026-47262){: external}, [CVE-2026-42505](https://nvd.nist.gov/vuln/detail/CVE-2026-42505){: external}, [CVE-2026-5450](https://nvd.nist.gov/vuln/detail/CVE-2026-5450){: external}, [CVE-2026-5928](https://nvd.nist.gov/vuln/detail/CVE-2026-5928){: external}, [CVE-2026-6238](https://nvd.nist.gov/vuln/detail/CVE-2026-6238){: external}, [CVE-2026-5435](https://nvd.nist.gov/vuln/detail/CVE-2026-5435){: external}, [GHSA-gcjh-h69q-9w9g](https://nvd.nist.gov/vuln/detail/GHSA-gcjh-h69q-9w9g){: external}, [GHSA-hrxh-6v49-42gf](https://nvd.nist.gov/vuln/detail/GHSA-hrxh-6v49-42gf){: external}, and [GHSA-w5pp-99ch-qj29](https://nvd.nist.gov/vuln/detail/GHSA-w5pp-99ch-qj29){: external}. ### Version 4.21 - v1.0.5_4.21_351283493, released 25 June 2026 {: #cl-add-ons-openshift-virtualization-v105_421_351283493} - 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 - Resolves the following Prisma CVEs: [CVE-2026-39821](https://nvd.nist.gov/vuln/detail/CVE-2026-39821){: external}, [CVE-2026-41178](https://nvd.nist.gov/vuln/detail/CVE-2026-41178){: external}, [CVE-2026-47262](https://nvd.nist.gov/vuln/detail/CVE-2026-47262){: external}, and [CVE-2026-53488](https://nvd.nist.gov/vuln/detail/CVE-2026-53488){: external}. ### Version 4.21 - v1.0.4_4.21_347026591, released 15 June 2026 {: #cl-add-ons-openshift-virtualization-v104_421_347026591} - Resolves the following CVEs: [CVE-2026-4438](https://nvd.nist.gov/vuln/detail/CVE-2026-4438){: external}, [CVE-2026-4046](https://nvd.nist.gov/vuln/detail/CVE-2026-4046){: external}, and [CVE-2026-4437](https://nvd.nist.gov/vuln/detail/CVE-2026-4437){: external}. - 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 - Resolves the following Prisma CVEs: [CVE-2026-33811](https://nvd.nist.gov/vuln/detail/CVE-2026-33811){: external}, [CVE-2026-33814](https://nvd.nist.gov/vuln/detail/CVE-2026-33814){: external}, [CVE-2026-39820](https://nvd.nist.gov/vuln/detail/CVE-2026-39820){: external}, [CVE-2026-39836](https://nvd.nist.gov/vuln/detail/CVE-2026-39836){: external}, [CVE-2026-42499](https://nvd.nist.gov/vuln/detail/CVE-2026-42499){: external}, [CVE-2026-39823](https://nvd.nist.gov/vuln/detail/CVE-2026-39823){: external}, and [CVE-2026-39826](https://nvd.nist.gov/vuln/detail/CVE-2026-39826){: external}. ## Version 4.20 {: #cl-add-ons-openshift-virtualization-4.20} ### Version 4.20 - v1.0.4_4.20_347026591, released 15 June 2026 {: #cl-add-ons-openshift-virtualization-v104_420_347026591} - Resolves the following CVEs: [CVE-2026-4438](https://nvd.nist.gov/vuln/detail/CVE-2026-4438){: external}, [CVE-2026-4046](https://nvd.nist.gov/vuln/detail/CVE-2026-4046){: external}, and [CVE-2026-4437](https://nvd.nist.gov/vuln/detail/CVE-2026-4437){: external}. - 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 - Resolves the following Prisma CVEs: [CVE-2026-33811](https://nvd.nist.gov/vuln/detail/CVE-2026-33811){: external}, [CVE-2026-33814](https://nvd.nist.gov/vuln/detail/CVE-2026-33814){: external}, [CVE-2026-39820](https://nvd.nist.gov/vuln/detail/CVE-2026-39820){: external}, [CVE-2026-39836](https://nvd.nist.gov/vuln/detail/CVE-2026-39836){: external}, [CVE-2026-42499](https://nvd.nist.gov/vuln/detail/CVE-2026-42499){: external}, [CVE-2026-39823](https://nvd.nist.gov/vuln/detail/CVE-2026-39823){: external}, and [CVE-2026-39826](https://nvd.nist.gov/vuln/detail/CVE-2026-39826){: external}.