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TI-2026-05646 Aliases CVE-2026-6437GHSA-mph4-q2vm-w2pw

AWS EFS CSI Driver Mount Option Injection

Priority LOW 31CWE-88Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-88.

Summary

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 it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00565 47th percentileScored 2026-11-07
Fix Partial AWS EFS CSI Driver (Amazon): 3.0.1github.com/kubernetes-sigs/aws-efs-csi-driver (Go): 1.7.8-0.20260416142831-51806c22c575Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AWSAWS EFS CSI Driverbefore 3.0.13.0.1Patch availableCNA
—github.com/kubernetes-sigs/aws-efs-csi-driver (Go)before 1.7.8-0.20260416142831-51806c22c5751.7.8-0.20260416142831-51806c22c575Patch availableGHSA-mph4-q2vm-w2pw
  • AWS EFS CSI Driver VendorAWS Affected before 3.0.1 Fixed in 3.0.1 Patch available CNA
  • github.com/kubernetes-sigs/aws-efs-csi-driver (Go) Vendor— Affected before 1.7.8-0.20260416142831-51806c22c575 Fixed in 1.7.8-0.20260416142831-51806c22c575 Patch available GHSA-mph4-q2vm-w2pw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:amazon:efs_csi_driver:*:*:*:*:*:kubernetes:*:*before 3.0.1VulnerableAWS
  • cpe:2.3:a:amazon:efs_csi_driver:*:*:*:*:*:kubernetes:*:* Versions before 3.0.1 Vulnerable ·AWS

Remediation

  • Fix · CNA AWS EFS CSI Driver (Amazon) Fixed in 3.0.1
  • Fix · GHSA-mph4-q2vm-w2pw github.com/kubernetes-sigs/aws-efs-csi-driver (Go) Fixed in 1.7.8-0.20260416142831-51806c22c575 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-6437
  2. 2026-10-03 Alias added: GHSA-mph4-q2vm-w2pw
  3. 2026-10-20 Affected versions changed · CNA
  4. 2026-10-25 EPSS moved to the below the 50th percentile

References

Patch 1

Advisory 3

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences