What is CVE-2026-103505?

CVE-2026-103505 is a medium-severity vulnerability in AWS Aws-Efs-Csi-Driver, classified under Argument Injection. CVSS score: 6.5/10. Published 2026-10-01.

How severe is CVE-2026-103505?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in AWS Aws-Efs-Csi-Driver

CVE-2026-103505

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.

Published 2026-10-01 · last modified 2026-10-01.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

AWS Aws-Efs-Csi-Driver

Weakness classification (CWE)

CWE-88 — Argument Injection

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (patch)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory)

Frequently asked questions

What is CVE-2026-103505?: CVE-2026-103505 is a medium-severity vulnerability in AWS Aws-Efs-Csi-Driver, classified under Argument Injection. CVSS score: 6.5/10. Published 2026-10-01.
How severe is CVE-2026-103505?: Medium severity. CVSS v3 base score is 6.5 out of 10.