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CVE-2026-1778— TLS disabled by default in select aws/sagemaker-python-sdk configurations

Quick assessment

Affected
AWS SageMaker Python SDK
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 SageMaker Python SDK是美国亚马逊（Amazon）公司的一个构件、训练和部署机器学习模型的开发者工具包。 Amazon SageMaker Python SDK v3.1.1之前版本和v2.256.0之前版本存在安全漏洞，该漏洞源于导入Triton Python模型时禁用TLS证书验证，可能导致接受无效和自签名证书的请求。

CVSS 5.9 · Medium EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-1778

Vulnerability Information
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Vulnerability Title
TLS disabled by default in select aws/sagemaker-python-sdk configurations
Source: CVE Program / CVE List V5
Vulnerability Description
Amazon SageMaker Python SDK before v3.1.1 or v2.256.0 disables TLS certificate verification for HTTPS connections made by the service when a Triton Python model is imported, incorrectly allowing for requests with invalid and self-signed certificates to succeed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Amazon SageMaker Python SDK 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Amazon SageMaker Python SDK是美国亚马逊（Amazon）公司的一个构件、训练和部署机器学习模型的开发者工具包。 Amazon SageMaker Python SDK v3.1.1之前版本和v2.256.0之前版本存在安全漏洞，该漏洞源于导入Triton Python模型时禁用TLS证书验证，可能导致接受无效和自签名证书的请求。
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
AWS SageMaker Python SDK - -

II. Public POCs for CVE-2026-1778

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III. Intelligence Information for CVE-2026-1778

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Vendor Advisories for CVE-2026-1778 (1)

IV. Related Vulnerabilities

Same product: SageMaker Python SDK
Same vendor: AWS
Same weakness: CWE-295

V. Comments for CVE-2026-1778

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