Description
A path traversal vulnerability was discovered in the Kubernetes kubectl client's kubectl cp command on Windows. When copying files from a container, kubectl 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 kubectl cp is invoked, limited only by the system permissions of the local user. This issue only affects kubectl clients running on Windows.
Published: 2026-09-28
Score: 6.5 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Mon, 28 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 28 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
References

Mon, 28 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Kubernetes
Kubernetes kubernetes
Vendors & Products Kubernetes
Kubernetes kubernetes

Mon, 28 Sep 2026 11:45:00 +0000

Type Values Removed Values Added
Description A path traversal vulnerability was discovered in the Kubernetes kubectl client's kubectl cp command on Windows. When copying files from a container, kubectl 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 kubectl cp is invoked, limited only by the system permissions of the local user. This issue only affects kubectl clients running on Windows.
Title Kubernetes kubectl cp path traversal on Windows allows arbitrary file writes
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:N'}


Subscriptions

Kubernetes Kubernetes
cve-icon MITRE

Status: PUBLISHED

Assigner: kubernetes

Published:

Updated: 2026-09-28T18:09:01.767Z

Reserved: 2026-08-10T13:29:40.767Z

Link: CVE-2026-19444

cve-icon Vulnrichment

Updated: 2026-09-28T13:10:11.083Z

cve-icon NVD

Status : Received

Published: 2026-09-28T12:17:36.723

Modified: 2026-09-28T18:17:21.683

Link: CVE-2026-19444

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-28T13:00:16Z

Weaknesses