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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-3864

CSI Driver for NFS path traversal via subDir may delete unintended directories on the NFS server

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Kubernetes CSI Driver for NFS

Default version status: unaffected

  • 0 to < 4.13.1affected
  • 4.13.1unaffected

References