{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3864", "assignerOrgId": "a6081bf6-c852-4425-ad4f-a67919267565", "state": "PUBLISHED", "assignerShortName": "kubernetes", "dateReserved": "2026-03-10T06:18:16.575Z", "datePublished": "2026-03-20T22:21:33.827Z", "dateUpdated": "2026-03-20T23:10:38.486Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "CSI Driver for NFS", "vendor": "Kubernetes", "versions": [{"status": "affected", "version": "0", "lessThan": "4.13.1", "versionType": "semver"}, {"status": "unaffected", "version": "4.13.1"}]}], "credits": [{"lang": "en", "type": "reporter", "user": "00000000-0000-4000-9000-000000000000", "value": "Shaul Ben Hai, Senior Staff Security Researcher, SentinelOne"}], "datePublic": "2026-03-17T00:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<div>A vulnerability was discovered in the Kubernetes CSI Driver for NFS where the subDir parameter in volume identifiers was insufficiently validated. Attackers with the ability to create PersistentVolumes referencing the NFS CSI driver could craft volume identifiers containing path traversal sequences (../). During volume deletion or cleanup operations, the driver could operate on unintended directories outside the intended managed path within the NFS export, which may lead to deletion or modification of directories on the NFS server.</div>"}], "value": "A vulnerability was discovered in the Kubernetes CSI Driver for NFS where the subDir parameter in volume identifiers was insufficiently validated. Attackers with the ability to create PersistentVolumes referencing the NFS CSI driver could craft volume identifiers containing path traversal sequences (../). During volume deletion or cleanup operations, the driver could operate on unintended directories outside the intended managed path within the NFS export. This may lead to deletion or modification of directories on the NFS server."}], "impacts": [{"capecId": "CAPEC-126", "descriptions": [{"lang": "en", "value": "CAPEC-126 Path Traversal"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "MEDIUM", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "CSI Driver for NFS path traversal via subDir may delete unintended directories on the NFS server"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-22", "description": "CWE-22 Path Traversal", "type": "CWE"}]}], "providerMetadata": {"orgId": "a6081bf6-c852-4425-ad4f-a67919267565", "shortName": "kubernetes", "dateUpdated": "2026-03-20T22:21:33.827Z"}, "references": [{"tags": ["mailing-list"], "url": "https://groups.google.com/g/kubernetes-security-announce/c/i4ZKN9VLcUE"}, {"tags": ["issue-tracking"], "url": "https://github.com/kubernetes/kubernetes/issues/137797"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<div>Upgrade the CSI Driver for NFS to version 4.13.1 or later. As mitigations, restrict PersistentVolume creation privileges to trusted administrators and review NFS exports to ensure only intended directories are writable by the driver.</div>"}], "value": "Upgrade the CSI Driver for NFS to version 4.13.1 or later. As mitigations, restrict PersistentVolume creation privileges to trusted administrators and review NFS exports to ensure only intended directories are writable by the driver."}], "source": {"discovery": "EXTERNAL"}, "title": "CSI Driver for NFS path traversal via subDir may delete unintended directories on the NFS server", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/03/17/1"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-03-20T23:10:38.486Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was discovered in the Kubernetes CSI Driver for NFS where the subDir parameter in volume identifiers was insufficiently validated. Attackers with the ability to create PersistentVolumes referencing the NFS CSI driver could craft volume identifiers containing path traversal sequences (../). During volume deletion or cleanup operations, the driver could operate on unintended directories outside the intended managed path within the NFS export. This may lead to deletion or modification of directories on the NFS server."}], "id": "CVE-2026-3864", "lastModified": "2026-03-21T00:16:29.083", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.2, "source": "jordan@liggitt.net", "type": "Secondary"}]}, "published": "2026-03-20T23:16:48.303", "references": [{"source": "jordan@liggitt.net", "url": "https://github.com/kubernetes/kubernetes/issues/137797"}, {"source": "jordan@liggitt.net", "url": "https://groups.google.com/g/kubernetes-security-announce/c/i4ZKN9VLcUE"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/03/17/1"}], "sourceIdentifier": "jordan@liggitt.net", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "jordan@liggitt.net", "type": "Secondary"}]}

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