CVE-2026-103505

Medium

Description

Improper neutralization of argument delimiters in the volume handling component in AWS EFS CSI Driver (aws-efs-csi-driver) v3.1.0 through v3.4.2 might allow remote authenticated users with PersistentVolume creation permissions to inject arbitrary mount options via comma-separated values in the mounttargetipmap volumeAttribute. To remediate this issue, users should upgrade to version v3.5.0 or later.

SeverityMedium

CVSS6.5

Exploit probability—

ProductAws-efs-csi-driver

PublishedOct 1, 2026

First seenOct 1, 2026

Weakness typeCWE-88CWE-88

How to fix

Patches

github.com/kubernetes-sigs/aws-efs-csi-driver/releases/tag/v3.5.0

Vendor advisories

aws.amazon.com/security/security-bulletins/2026-120-aws/

Affected products

Product	Affected versions	Fixed in
AWS aws-efs-csi-driver	3.1.0 ≤ v ≤ 3.4.2	—

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