CVE-2026-6437: Improper neutralization of argument delimiters in the volume handling component in AWS EFS CSI Driver (aws-efs

Q: How do I fix CVE-2026-6437?

efs csi driver: upgrade to 3.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-6437 being exploited?

CVE-2026-6437 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-6437 affect?

CVE-2026-6437 affects efs csi driver. Severity is medium (CVSS 6.5). Improper neutralization of argument delimiters in the volume handling component in AWS EFS CSI Driver (aws-efs-csi-driver) before v3.0.1 allows remote authenticated users with PersistentVolume creation permissions to inject arbitrary mount

Q: How urgent is CVE-2026-6437?

Priority 39/100. On your watchlist

Routine

MEDIUM 6.5WATCHLISTUPGRADE

CVE-2026-6437 is a medium-severity flaw (CVSS 6.5) affecting efs csi driver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper neutralization of argument delimiters in the volume handling component in AWS EFS CSI Driver (aws-efs-csi-driver) before v3.0.1 allows remote authenticated users with PersistentVolume creation permissions to inject arbitrary mount options via comma injection. To remediate this issue, users should upgrade to version v3.0.1

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-88
Published	2026-04-17
Last modified	2026-10-26

Publisher (CNA): AMZN · Vendor: amazon

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-17 19:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

amazon efs csi driver UPGRADE

Affected: < 3.0.1

Fixed in: 3.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy efs-csi-driver || rpm -q efs-csi-driver || efs-csi-driver --version

2. UPGRADE to 3.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade efs-csi-driver

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade efs-csi-driver

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-6437?

efs csi driver: upgrade to 3.0.1. Exact commands for each OS are on this page.

Is CVE-2026-6437 being exploited?

CVE-2026-6437 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-6437 affect?

CVE-2026-6437 affects efs csi driver. Severity is medium (CVSS 6.5). Improper neutralization of argument delimiters in the volume handling component in AWS EFS CSI Driver (aws-efs-csi-driver) before v3.0.1 allows remote authenticated users with PersistentVolume creation permissions to inject arbitrary mount

How urgent is CVE-2026-6437?

Priority 39/100. On your watchlist

Software pages

AWS vulnerabilities

References

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