CVE-2026-19444

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 4.7

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/kubernetes/kubernetes/issues/141294
https://github.com/kubernetes/kubernetes/pull/141296
https://groups.google.com/g/kubernetes-security-announce/c/v_ob5Gf4-eY
http://www.openwall.com/lists/oss-security/2026/09/28/1

Configurations

No configuration.

History

28 Sep 2026, 14:17

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/09/28/1 -

28 Sep 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-28 12:17

Updated : 2026-09-29 21:39

NVD link : CVE-2026-19444

Mitre link : CVE-2026-19444

CVE.ORG link : CVE-2026-19444

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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