Vulnerability-Lookup

CVE-2026-3864 (GCVE-0-2026-3864)

Vulnerability from cvelistv5 – Published: 2026-03-20 22:21 – Updated: 2026-03-23 14:13

Title

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

Summary

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.

Severity ?

6.5 (Medium)


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

CWE

CWE-22 - Path Traversal

Assigner

kubernetes

References

URL

Tags

	https://groups.google.com/g/kubernetes-security-a…	mailing-list
	https://github.com/kubernetes/kubernetes/issues/137797	issue-tracking

Impacted products

	Vendor	Product	Version
	Kubernetes	CSI Driver for NFS	Affected: 0 , < 4.13.1 (semver) Unaffected: 4.13.1

Date Public ?

2026-03-17 00:00

Credits

Shaul Ben Hai, Senior Staff Security Researcher, SentinelOne

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-3864

Vulnerability from fkie_nvd - Published: 2026-03-20 23:16 - Updated: 2026-03-23 14:32

Severity ?

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Summary

References

	URL	Tags
	jordan@liggitt.net	https://github.com/kubernetes/kubernetes/issues/137797
	jordan@liggitt.net	https://groups.google.com/g/kubernetes-security-announce/c/i4ZKN9VLcUE
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/03/17/1

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Se descubri\u00f3 una vulnerabilidad en el controlador CSI de Kubernetes para NFS donde el par\u00e1metro subDir en los identificadores de volumen no se validaba suficientemente. Atacantes con la capacidad de crear PersistentVolumes que hacen referencia al controlador CSI de NFS podr\u00edan crear identificadores de volumen que contienen secuencias de salto de ruta (../). Durante las operaciones de eliminaci\u00f3n o limpieza de volumen, el controlador podr\u00eda operar en directorios no deseados fuera de la ruta gestionada prevista dentro de la exportaci\u00f3n NFS. Esto podr\u00eda llevar a la eliminaci\u00f3n o modificaci\u00f3n de directorios en el servidor NFS."
    }
  ],
  "id": "CVE-2026-3864",
  "lastModified": "2026-03-23T14:32:02.800",
  "metrics": {
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        "impactScore": 5.2,
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        "type": "Secondary"
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  "published": "2026-03-20T23:16:48.303",
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GHSA-2MJQ-54QG-7W6J

Vulnerability from github – Published: 2026-03-21 00:31 – Updated: 2026-03-24 16:11

Summary

NFS CSI driver for Kubernetes is Vulnerable to Path Traversal through Volume Identifier Parameter

Details

Severity ?

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

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        "name": "github.com/kubernetes-csi/csi-driver-nfs"
      },
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            }
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        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-3864"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-24T16:11:26Z",
    "nvd_published_at": "2026-03-20T23:16:48Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-2mjq-54qg-7w6j",
  "modified": "2026-03-24T16:11:26Z",
  "published": "2026-03-21T00:31:43Z",
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      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3864"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kubernetes/kubernetes/issues/137797"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kubernetes-csi/csi-driver-nfs/commit/316af2d86b913a595542dc17e8599cf81afd938f"
    },
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      "type": "PACKAGE",
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    },
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      "type": "WEB",
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    },
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      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/03/17/1"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "NFS CSI driver for Kubernetes is Vulnerable to Path Traversal through Volume Identifier Parameter"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-3864 (GCVE-0-2026-3864)

FKIE_CVE-2026-3864

GHSA-2MJQ-54QG-7W6J

Tags

Sightings

Nomenclature