Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-81849— Path traversal in the aws:downloadContent plugin in amazon-ssm-agent

Quick assessment

Affected
amazon amazon-ssm-agent
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Amazon SSM Agent是美国Amazon公司的一款云实例管理代理。 Amazon SSM Agent 3.3.4515.0之前版本存在路径遍历漏洞，该漏洞源于aws:downloadContent插件对受限目录的路径名限制不当，可能导致已认证远程用户通过S3源中特制的对象键，在预期下载目录之外以root权限写入任意文件，若覆盖敏感文件可能导致任意代码执行。

CVSS 8.8 · High EPSS 0.90% · P60

Affected Version Matrix 1

VendorProduct Version RangeStatus
amazon amazon-ssm-agent < 3.3.4515.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-81849

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Path traversal in the aws:downloadContent plugin in amazon-ssm-agent
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
相对路径遍历
Source: CVE Program / CVE List V5
Vulnerability Title
Amazon SSM Agent 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Amazon SSM Agent是美国Amazon公司的一款云实例管理代理。 Amazon SSM Agent 3.3.4515.0之前版本存在路径遍历漏洞，该漏洞源于aws:downloadContent插件对受限目录的路径名限制不当，可能导致已认证远程用户通过S3源中特制的对象键，在预期下载目录之外以root权限写入任意文件，若覆盖敏感文件可能导致任意代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
amazon amazon-ssm-agent 0 ~ 3.3.4515.0 -

II. Public POCs for CVE-2026-81849

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-81849

请登录查看更多情报信息。

Vendor Pages for CVE-2026-81849 (2)

IV. Related Vulnerabilities

Same vendor: amazon
Same weakness: CWE-23