AWS EFS CSI Driver Mount Option Injection via mounttargetipmap (CVE-2026-103505) | HOL Guard CVE

Medium · CVSS 6.9CVE-2026-103505

AWS EFS CSI Driver Mount Option Injection via mounttargetipmap

Answer in brief

CVE-2026-103505 records a Medium severity (CVSS 6.9) vulnerability in AWS EFS CSI Driver Mount Option Injection via mounttargetipmap. The current sources do not mark it as known exploited. The current feed maps AWS/aws-efs-csi-driver (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 1, 2026Updated Oct 1, 2026Source checked Oct 1, 2026First seen by HOL Oct 1, 2026Material review Oct 1, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.9
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps AWS/aws-efs-csi-driver (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
AWS/aws-efs-csi-drivergeneric	>=3.1.0 <=3.4.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for AWS/aws-efs-csi-driver.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Oct 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 1, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.