Vulnerability-Lookup

CVE-2026-85781 (GCVE-0-2026-85781)

Vulnerability from cvelistv5 – Published: 2026-09-04 18:49 – Updated: 2026-09-04 19:28

Title

Unverified access point ownership in Amazon EFS CSI Driver

Summary

Unverified ownership of a storage access point in the volume deletion component of the Amazon EFS CSI Driver before v3.4.1 might allow an authenticated Kubernetes user with PersistentVolume creation privileges to cause recursive deletion of directories on an EFS filesystem they are not authorized to access, via a crafted PersistentVolume volumeHandle that pairs an access point from one filesystem with a different target filesystem. To remediate this issue, users should upgrade to version v3.4.1.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H

8.7 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 19:27 UTC

CWE

CWE-283 - Unverified ownership

Assigner

AMZN mitre root

References

2 references

URL	Tags
https://github.com/kubernetes-sigs/aws-efs-csi-dr…	patchrelease-notes
https://aws.amazon.com/security/security-bulletin…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
aws	aws-efs-csi-driver	Affected: 0 , ≤ 3.4.0 (custom) cpe:2.3:a:aws:aws-efs-csi-driver::::::::

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-85781",
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                "timestamp": "2026-09-04T19:27:47.756572Z",
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}

FKIE_CVE-2026-85781

Vulnerability from fkie_nvd - Published: 2026-09-04 19:17 - Updated: 2026-09-04 20:17

Severity

8.7 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H

Summary

References

	URL	Tags
	ff89ba41-3aa1-4d27-914a-91399e9639e5	https://aws.amazon.com/security/security-bulletins/2026-099-aws/
	ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/kubernetes-sigs/aws-efs-csi-driver/releases/tag/v3.4.1

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "aws-efs-csi-driver",
          "vendor": "aws",
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    }
  ],
  "id": "CVE-2026-85781",
  "lastModified": "2026-09-04T20:17:33.030",
  "metrics": {
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      {
        "cvssData": {
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        {
          "lang": "en",
          "value": "CWE-283"
        }
      ],
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "type": "Secondary"
    }
  ]
}

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.

Action not permitted

CVE-2026-85781 (GCVE-0-2026-85781)

FKIE_CVE-2026-85781

Tags

Sightings

Nomenclature