CVE-2026-7461: Amazon Ecs Container Agent

High severity, CVSS 7.2. EPSS: 0.8% chance of exploitation in the next 30 days.

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 products

• Amazon Amazon Ecs Container Agent: from 1.47.0, before 1.103.0 (fixed in 1.103.0)

Published 2026-04-30. Last modified 2026-06-17.