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Vulnerability record · CVE-2026-7461 · published 30 April 2026

CVE-2026-7461: Amazon ecs container agent os command injection vulnerability

Amazon · Amazon Ecs Container Agent

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.

7.5 CVSS 4.0 High EPSS 0.81% · top 44.9% CWE-78 · OS command injection
7.5CVSS 4.0 base score
0.81%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://aws.amazon.com/security/security-bulletins/2026-024-aws/ Vendor Advisory
https://github.com/aws/amazon-ecs-agent/releases/tag/v1.103.0 Release Notes
https://github.com/aws/amazon-ecs-agent/security/advisories/GHSA-fc67-c4hg-q653 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-7461), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.