Vulnerability-Lookup

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

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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/kubernetes-csi/csi-driver-nfs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20260210055231-316af2d86b91"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "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",
  "references": [
    {
      "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"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kubernetes-csi/csi-driver-nfs"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/i4ZKN9VLcUE"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/03/17/1"
    }
  ],
  "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"
}

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

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

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-03-20T23:10:38.486Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/03/17/1"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3864",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-23T14:13:44.147797Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-23T14:13:53.553Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "CSI Driver for NFS",
          "vendor": "Kubernetes",
          "versions": [
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              "lessThan": "4.13.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.13.1"
            }
          ]
        }
      ],
      "credits": [
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          "type": "reporter",
          "user": "00000000-0000-4000-9000-000000000000",
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        }
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      ],
      "impacts": [
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          "descriptions": [
            {
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
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      "providerMetadata": {
        "dateUpdated": "2026-03-20T22:21:33.827Z",
        "orgId": "a6081bf6-c852-4425-ad4f-a67919267565",
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      "references": [
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          "url": "https://groups.google.com/g/kubernetes-security-announce/c/i4ZKN9VLcUE"
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            }
          ],
          "value": "Upgrade the CSI Driver for NFS to version 4.13.1 or later. As mitigations, restrict PersistentVolume creation privileges to trusted administrators and review NFS exports to ensure only intended directories are writable by the driver."
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  "cveMetadata": {
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    "assignerShortName": "kubernetes",
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    "datePublished": "2026-03-20T22:21:33.827Z",
    "dateReserved": "2026-03-10T06:18:16.575Z",
    "dateUpdated": "2026-03-23T14:13:53.553Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

GHSA-2MJQ-54QG-7W6J

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

Tags

Sightings

Nomenclature