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.
Advisories

No advisories yet.

Fixes

Solution

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.


Workaround

No workaround given by the vendor.

History

Mon, 23 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 23 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Kubernetes
Kubernetes csi Driver For Nfs
Vendors & Products Kubernetes
Kubernetes csi Driver For Nfs

Sat, 21 Mar 2026 05:30:00 +0000

Type Values Removed Values Added
References

Fri, 20 Mar 2026 22:30:00 +0000

Type Values Removed Values Added
Description 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.
Title CSI Driver for NFS path traversal via subDir may delete unintended directories on the NFS server
Weaknesses CWE-22
References
Metrics cvssV3_1

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


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: kubernetes

Published:

Updated: 2026-03-23T14:13:53.553Z

Reserved: 2026-03-10T06:18:16.575Z

Link: CVE-2026-3864

cve-icon Vulnrichment

Updated: 2026-03-20T23:10:38.486Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-20T23:16:48.303

Modified: 2026-03-23T14:32:02.800

Link: CVE-2026-3864

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-23T09:52:28Z

Weaknesses