CVE-2026-85781

EUVD-2026-71692

04.09.2026, 19:17

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	8.7 HIGH	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Common Weakness Enumeration

CWE-283 - Unverified Ownership
The software does not properly verify that a critical resource is owned by the proper entity.

References

https://aws.amazon.com/security/security-bulletins/2026-099-aws/

https://github.com/kubernetes-sigs/aws-efs-csi-driver/releases/tag/v3.4.1