Improper limitation of a pathname to a restricted directory in the aws:downloadContent plugin in amazon-ssm-agent before 3.3.4515.0 might allow an authenticated remote user whose ssm:SendCommand permission is restricted to the AWS-DownloadContent document, to write arbitrary files outside the intended download directory with root privileges, via crafted object keys in the S3 source the document is directed to retrieve. This issue may lead to arbitrary code execution as root if specific sensitive files are overwritten. To remediate this issue, customers should upgrade amazon-ssm-agent to version 3.3.4515.0 or later.
History

Tue, 01 Sep 2026 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Amazon amazon Ssm Agent
Vendors & Products Amazon amazon Ssm Agent

Mon, 31 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description Improper limitation of a pathname to a restricted directory in the aws:downloadContent plugin in amazon-ssm-agent before 3.3.4515.0 might allow an authenticated remote user whose ssm:SendCommand permission is restricted to the AWS-DownloadContent document, to write arbitrary files outside the intended download directory with root privileges, via crafted object keys in the S3 source the document is directed to retrieve. This issue may lead to arbitrary code execution as root if specific sensitive files are overwritten. To remediate this issue, customers should upgrade amazon-ssm-agent to version 3.3.4515.0 or later.
Title Path traversal in the aws:downloadContent plugin in amazon-ssm-agent
First Time appeared Amazon
Amazon amazon-ssm-agent
Weaknesses CWE-23
CPEs cpe:2.3:a:amazon:amazon-ssm-agent:*:*:*:*:*:*:*:*
Vendors & Products Amazon
Amazon amazon-ssm-agent
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published: 2026-08-28T18:02:33.468Z

Updated: 2026-08-31T18:44:58.114Z

Reserved: 2026-08-27T16:22:32.726Z

Link: CVE-2026-81849

cve-icon Vulnrichment

Updated: 2026-08-31T18:44:53.990Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-28T20:20:13.940

Modified: 2026-08-31T19:17:15.310

Link: CVE-2026-81849

cve-icon Redhat

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