{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-19444", "assignerOrgId": "a6081bf6-c852-4425-ad4f-a67919267565", "state": "PUBLISHED", "assignerShortName": "kubernetes", "dateReserved": "2026-08-10T13:29:40.767Z", "datePublished": "2026-09-28T11:38:10.699Z", "dateUpdated": "2026-09-28T11:38:10.699Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "a6081bf6-c852-4425-ad4f-a67919267565", "shortName": "kubernetes", "dateUpdated": "2026-09-28T11:38:10.699Z"}, "title": "Kubernetes kubectl cp path traversal on Windows allows arbitrary file writes", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-126", "descriptions": [{"lang": "en", "value": "CAPEC-126 Path Traversal"}]}, {"capecId": "CAPEC-139", "descriptions": [{"lang": "en", "value": "CAPEC-139 Relative Path Traversal"}]}], "affected": [{"vendor": "Kubernetes", "product": "Kubernetes", "platforms": ["Windows"], "repo": "https://github.com/kubernetes/kubernetes", "versions": [{"status": "affected", "version": "v1.36.0", "lessThanOrEqual": "v1.36.4", "versionType": "custom"}, {"status": "affected", "version": "v1.35.0", "lessThanOrEqual": "v1.35.8", "versionType": "custom"}, {"status": "affected", "version": "v1.34.0", "lessThanOrEqual": "v1.34.11", "versionType": "custom"}, {"status": "unknown", "version": "v1.0", "lessThanOrEqual": "v1.33.13", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A path traversal vulnerability was discovered in the Kubernetes\u00a0kubectl\u00a0client's\u00a0kubectl cp\u00a0command on Windows. When copying files from a container,\u00a0kubectl\u00a0runs tar inside the container to build a tar archive, transfers it over the network, and unpacks it on the local machine. If the tar binary in the container is malicious, it can execute arbitrary code and emit unexpected output, allowing an attacker who controls container contents to write files to arbitrary paths on the user's local machine when\u00a0kubectl cp\u00a0is invoked, limited only by the system permissions of the local user. This issue only affects kubectl clients running on Windows.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A path traversal vulnerability was discovered in the Kubernetes&nbsp;<code>kubectl</code>&nbsp;client's&nbsp;<code>kubectl cp</code>&nbsp;command on Windows. When copying files from a container,&nbsp;<code>kubectl</code>&nbsp;runs tar inside the container to build a tar archive, transfers it over the network, and unpacks it on the local machine. If the tar binary in the container is malicious, it can execute arbitrary code and emit unexpected output, allowing an attacker who controls container contents to write files to arbitrary paths on the user's local machine when&nbsp;<code>kubectl cp</code>&nbsp;is invoked, limited only by the system permissions of the local user. This issue only affects kubectl clients running on Windows.&nbsp;"}]}], "references": [{"url": "https://github.com/kubernetes/kubernetes/issues/141294", "tags": ["issue-tracking"]}, {"url": "https://github.com/kubernetes/kubernetes/pull/141296", "tags": ["patch"]}, {"url": "https://groups.google.com/g/kubernetes-security-announce/c/v_ob5Gf4-eY", "tags": ["mailing-list"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:N"}], "cvssV3_1": {"version": "3.1", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:N"}}], "credits": [{"lang": "en", "value": "Moriel Harush", "type": "reporter"}, {"lang": "en", "value": "Vyom Yadav", "type": "analyst"}, {"lang": "en", "value": "Maciej Szulik", "type": "remediation reviewer"}, {"lang": "en", "value": "Marly Salazar", "type": "remediation developer"}], "source": {"discovery": "UPSTREAM"}, "x_generator": {"engine": "Vulnogram 1.0.4"}}}}

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