CVE-2026-81849

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/2026-091-aws/
https://github.com/aws/amazon-ssm-agent/releases/tag/3.3.4515.0

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 20:20

Updated : 2026-08-31 19:17

NVD link : CVE-2026-81849

Mitre link : CVE-2026-81849

CVE.ORG link : CVE-2026-81849

JSON object : View

Products Affected

No product.

CWE

CWE-23

Relative Path Traversal

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