CVE-2026-3864

MEDIUM EPSS 41.3%
Published Mar 20, 20263mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Mar 20, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
6.5
Exploitability
1.2
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
41.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-22 Path Traversal Resource Mgmt

References 3

  • openwall.com http://www.openwall.com/lists/oss-security/2026/03/17/1
  • github.com https://github.com/kubernetes/kubernetes/issues/137797
  • groups.google.com https://groups.google.com/g/kubernetes-security-announce/c/i4ZKN9VLcUE

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.