EUVD-2026-13831
GHSA-2mjq-54qg-7w6j
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Lifecycle Timeline
4Tags
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.
Analysis
The Kubernetes NFS CSI Driver fails to properly validate the subDir parameter in volume identifiers, allowing privileged users to inject path traversal sequences that bypass intended directory restrictions. Attackers with PersistentVolume creation privileges can craft malicious volume identifiers to access and modify arbitrary directories on the NFS server during cleanup operations. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review file handling controls.
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