CVE-2026-6437mediumCWE-88

AWS EFS CSI Driver Mount Option Injection

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.9epss 0.4%

exploitation probability

0.4%top 65% of all CVEs

observed exploitation

nono source reports it

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

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

Affected products

Amazon · AWS EFS CSI Driver

References

https://aws.amazon.com/security/security-bulletins/2026-016-aws/https://github.com/kubernetes-sigs/aws-efs-csi-driver/releases/tag/v3.0.1 https://github.com/kubernetes-sigs/aws-efs-csi-driver/security/advisories/GHSA-mph4-q2vm-w2pw