CVE-2026-85781: CWE-283 Unverified ownership in aws aws-efs-csi-driver
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.
CVE-2026-85781: CWE-283 Unverified ownership in aws aws-efs-csi-driver
Description
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.
CVSS v4.0
Score 5.1medium
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- AMZN
- Date Reserved
- 2026-09-04T16:27:45.409Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://aws.amazon.com/security/security-bulletins/2026-099-aws/","vendor":"AWS"}]
Threat ID: 6a9b1379acd9273b49121d82
Added to database: 09/04/2026, 18:52:41 UTC
Last updated: 09/04/2026, 20:22:47 UTC
Views: 7
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