CVE-2026-7461: OS Command Injection in Amazon ECS Agent via FSx Windows File Server Volume Credentials

Q: What is the severity of CVE-2026-7461?

CVE-2026-7461 has a severity rating that indicates a critical risk level due to the potential for OS command injection.

Q: How do I fix CVE-2026-7461?

To mitigate CVE-2026-7461, upgrade the Amazon ECS Agent to version 1.103.0 or later.

Q: Who is affected by CVE-2026-7461?

CVE-2026-7461 affects users of the Amazon ECS Agent on Windows prior to version 1.103.0.

Q: What type of vulnerability is CVE-2026-7461?

CVE-2026-7461 is classified as an OS Command Injection vulnerability.

Q: What consequences can arise from CVE-2026-7461?

Exploitation of CVE-2026-7461 may allow a remote authenticated attacker to execute arbitrary OS commands.

Published Apr 30, 2026

Updated

Improper neutralization of inputs used in an OS command in the FSx Windows File Server volume mounting component in Amazon ECS Agent on Windows before version 1.103.0 might allow a remote authenticated threat actor to execute shell commands with SYSTEM privileges on the underlying host via a specially crafted username field in an ECS task definition. This issue requires permissions to register ECS task definitions or write to the Secrets Manager or SSM Parameter Store credentials used by the FSx volume configuration. To remediate this issue, users should upgrade to version 1.103.0.

Affected Software

2 affected components

Amazon Amazon ECS Agent<1.103.0

Amazon Amazon Ecs Container Agent>=1.47.0<1.103.0

Event History

Apr 30, 2026

CVE Published

via MITRE·06:35 PM

Data Sourced

via MITRE·06:35 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·07:16 PM

DescriptionSeverityWeaknessAffected Software

Mar 30, 58312

Event

via FIRST·08:38 AM

Frequently Asked Questions

What is the severity of CVE-2026-7461?

CVE-2026-7461 has a severity rating that indicates a critical risk level due to the potential for OS command injection.

How do I fix CVE-2026-7461?

To mitigate CVE-2026-7461, upgrade the Amazon ECS Agent to version 1.103.0 or later.

Who is affected by CVE-2026-7461?

CVE-2026-7461 affects users of the Amazon ECS Agent on Windows prior to version 1.103.0.

What type of vulnerability is CVE-2026-7461?

CVE-2026-7461 is classified as an OS Command Injection vulnerability.

What consequences can arise from CVE-2026-7461?

Exploitation of CVE-2026-7461 may allow a remote authenticated attacker to execute arbitrary OS commands.

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