CVE-2026-3864

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

CVSS 6.5 MEDIUMEPSS 0.5%CWE-22

Vexday Risk Score

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 6.5EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

20 mar 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Produtos afetados

Kubernetes · CSI Driver for NFS

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Referências

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