# CVE-2026-103505: AWS EFS CSI Driver Mount Option Injection via mounttargetipmap

> CVE-2026-103505: AWS EFS CSI Driver Mount Option Injection via mounttargetipmap. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-103505
Last updated: 2026-10-09T16:32:11Z

- Published: 2026-10-01 15:36 UTC · Updated: 2026-10-09 16:32 UTC · Assigner: AMZN
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- EPSS: 0.43%, 37th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-88

## Description

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.

## Affected vendors and products

- AWS: aws-efs-csi-driver

## Tracked companies

- [Amazon Web Services](https://rewindex.com/company/aws.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-103505)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-103505)
- [https://aws.amazon.com/security/security-bulletins/2026-120-aws/](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/releases/tag/v3.5.0)
- [https://github.com/kubernetes-sigs/aws-efs-csi-driver/security/advisories/GHSA-pv26-6q9q-5773](https://github.com/kubernetes-sigs/aws-efs-csi-driver/security/advisories/GHSA-pv26-6q9q-5773)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-103505 · Markdown: https://rewindex.com/cve/CVE-2026-103505.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-103505 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:34.210Z