{"cve":"CVE-2023-26484","nvd":{"published":"2023-03-15T21:15:08.857","modified":"2026-06-17T05:43:26.280","status":"Modified","description":"KubeVirt is a virtual machine management add-on for Kubernetes. In versions 0.59.0 and prior, if a malicious user has taken over a Kubernetes node where virt-handler (the KubeVirt node-daemon) is running, the virt-handler service account can be used to modify all node specs. This can be misused to lure-in system-level-privileged components which can, for instance, read all secrets on the cluster, or can exec into pods on other nodes. This way, a compromised node can be used to elevate privileges beyond the node until potentially having full privileged access to the whole cluster. The simplest way to exploit this, once a user could compromise a specific node, is to set with the virt-handler service account all other nodes to unschedulable and simply wait until system-critical components with high privileges appear on its node. No patches are available as of time of publication. As a workaround, gatekeeper users can add a webhook which will block the `virt-handler` service account to modify the spec of a node.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N","score":8.2},"cwes":["CWE-863"],"references":["https://github.com/kubevirt/kubevirt/issues/9109","https://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2","https://github.com/kubevirt/kubevirt/issues/9109","https://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2"],"products":["kubevirt:kubevirt"],"source":"nvd","synced_at":"2026-10-19T21:37:41.955480748+00:00"},"epss":{"cve":"CVE-2023-26484","score":0.00611,"percentile":0.49298,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-cp96-jpmq-xrr2","url":"https://osv.dev/vulnerability/GHSA-cp96-jpmq-xrr2","summary":"On a compromised node, the virt-handler service account can be used to modify all node specs","modified":"2023-11-08T04:12:02.023010Z","packages":[{"ecosystem":"Go","name":"kubevirt.io/kubevirt","purl":"pkg:golang/kubevirt.io/kubevirt","ranges":["<=0.59.0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}