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

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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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-23 14:13 UTC

CWE

CWE-22 - Path Traversal

Assigner

kubernetes mitre root

References

3 references

URL	Tags
https://groups.google.com/g/kubernetes-security-a…	mailing-list
https://github.com/kubernetes/kubernetes/issues/137797	issue-tracking
http://www.openwall.com/lists/oss-security/2026/03/17/1

Impacted products

1 product

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"
            }
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        }
      ],
      "credits": [
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          "lang": "en",
          "type": "reporter",
          "user": "00000000-0000-4000-9000-000000000000",
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        }
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      "impacts": [
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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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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          "tags": [
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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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    "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	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.