CVE-2026-6437: CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') in Amazon AWS EFS CSI Driver
CVE-2026-6437 is a vulnerability in the AWS EFS CSI Driver before version 3. 0. 1 that allows remote authenticated users with PersistentVolume creation permissions to inject arbitrary mount options by exploiting improper neutralization of argument delimiters. This issue arises from improper handling of commas in volume mount options, leading to potential argument injection. The vulnerability has a CVSS score of 6. 5, indicating a medium severity level. AWS manages remediation for this cloud-hosted service and has released version 3. 0. 1 to address the issue.
AI Analysis
Technical Summary
The AWS EFS CSI Driver versions prior to 3.0.1 contain a CWE-88 vulnerability due to improper neutralization of argument delimiters in the volume handling component. This flaw allows remote authenticated users who can create PersistentVolumes to perform argument injection by inserting arbitrary mount options via comma injection. The vulnerability can impact confidentiality and integrity but does not affect availability. AWS has published an advisory and released version 3.0.1 to remediate this issue.
Potential Impact
Successful exploitation allows an authenticated user with PersistentVolume creation permissions to inject arbitrary mount options, potentially leading to unauthorized access or modification of data on the mounted volumes. The CVSS score of 6.5 reflects a medium severity with high impact on confidentiality and integrity but no impact on availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
AWS manages remediation for this cloud-hosted service. Users should upgrade the AWS EFS CSI Driver to version 3.0.1 or later to address this vulnerability. Refer to the official AWS security bulletin at https://aws.amazon.com/security/security-bulletins/2026-016-aws/ for detailed guidance and confirmation of patch availability.
CVE-2026-6437: CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') in Amazon AWS EFS CSI Driver
Description
CVE-2026-6437 is a vulnerability in the AWS EFS CSI Driver before version 3. 0. 1 that allows remote authenticated users with PersistentVolume creation permissions to inject arbitrary mount options by exploiting improper neutralization of argument delimiters. This issue arises from improper handling of commas in volume mount options, leading to potential argument injection. The vulnerability has a CVSS score of 6. 5, indicating a medium severity level. AWS manages remediation for this cloud-hosted service and has released version 3. 0. 1 to address the issue.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The AWS EFS CSI Driver versions prior to 3.0.1 contain a CWE-88 vulnerability due to improper neutralization of argument delimiters in the volume handling component. This flaw allows remote authenticated users who can create PersistentVolumes to perform argument injection by inserting arbitrary mount options via comma injection. The vulnerability can impact confidentiality and integrity but does not affect availability. AWS has published an advisory and released version 3.0.1 to remediate this issue.
Potential Impact
Successful exploitation allows an authenticated user with PersistentVolume creation permissions to inject arbitrary mount options, potentially leading to unauthorized access or modification of data on the mounted volumes. The CVSS score of 6.5 reflects a medium severity with high impact on confidentiality and integrity but no impact on availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
AWS manages remediation for this cloud-hosted service. Users should upgrade the AWS EFS CSI Driver to version 3.0.1 or later to address this vulnerability. Refer to the official AWS security bulletin at https://aws.amazon.com/security/security-bulletins/2026-016-aws/ for detailed guidance and confirmation of patch availability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- AMZN
- Date Reserved
- 2026-04-16T17:42:09.910Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://aws.amazon.com/security/security-bulletins/2026-016-aws/","vendor":"AWS"}]
Threat ID: 69e28194bdfbbecc597b95e2
Added to database: 4/17/2026, 6:53:08 PM
Last enriched: 5/26/2026, 8:32:13 PM
Last updated: 6/1/2026, 1:48:03 PM
Views: 109
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