CVE-2026-3864

Published Mar 20, 2026

Last updated 24 days ago

CVSS medium 6.5
Container Security

Overview

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.
Source
jordan@liggitt.net
NVD status
Awaiting Analysis

Risk scores

CVSS 3.1

Type
Secondary
Base score
6.5
Impact score
5.2
Exploitability score
1.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Severity
MEDIUM

Weaknesses

jordan@liggitt.net
CWE-22

Social media

Hype score
Not currently trending

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References

Sources include official advisories and independent security research.