{"api_version":"1","generated_at":"2026-04-22T22:50:30+00:00","cve":"CVE-2023-26484","urls":{"html":"https://cve.report/CVE-2023-26484","api":"https://cve.report/api/cve/CVE-2023-26484.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-26484","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-26484"},"summary":{"title":"CVE-2023-26484","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.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-03-15 21:15:00","updated_at":"2023-03-27 16:58:00"},"problem_types":["CWE-863"],"metrics":[],"references":[{"url":"https://github.com/kubevirt/kubevirt/issues/9109","name":"https://github.com/kubevirt/kubevirt/issues/9109","refsource":"MISC","tags":[],"title":"A potential risk of kubevirt makes a worker node get the cluster's admin secret. · Issue #9109 · kubevirt/kubevirt · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2","name":"https://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2","refsource":"MISC","tags":[],"title":"On a compromised node, the virt-handler service account can be used to modify all node specs · Advisory · kubevirt/kubevirt · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-26484","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-26484","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"26484","vulnerable":"1","versionEndIncluding":"0.59.0","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"kubevirt","cpe5":"kubevirt","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"kubernetes","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-26484","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"KubeVirt is a virtual machine management add-on for Kubernetes. 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As a workaround, gatekeeper users can add a webhook which will block the `virt-handler` service account to modify the spec of a node."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-863: Incorrect Authorization","cweId":"CWE-863"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"kubevirt","product":{"product_data":[{"product_name":"kubevirt","version":{"version_data":[{"version_affected":"=","version_value":"<= 0.59.0"}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/kubevirt/kubevirt/issues/9109","refsource":"MISC","name":"https://github.com/kubevirt/kubevirt/issues/9109"},{"url":"https://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2","refsource":"MISC","name":"https://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2"}]},"source":{"advisory":"GHSA-cp96-jpmq-xrr2","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"}]}},"nvd":{"publishedDate":"2023-03-15 21:15:00","lastModifiedDate":"2023-03-27 16:58:00","problem_types":["CWE-863"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.8}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:kubevirt:kubevirt:*:*:*:*:*:kubernetes:*:*","versionEndIncluding":"0.59.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}