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.

CVSS 4.0

6.9CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:H/SI:N/SA:N

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 37% of CVEs (scores of 2026-10-25)

CWE

CWE-88

Published

2026-10-01

Modified

2026-10-02

Record from

the NVD, synced 2026-10-19

References

• https://aws.amazon.com/security/security-bulletins/2026-120-aws/
• https://github.com/kubernetes-sigs/aws-efs-csi-driver/releases/tag/v3.5.0
• https://github.com/kubernetes-sigs/aws-efs-csi-driver/security/advisories/GHSA-pv26-6q9q-5773

Check your stackJSON