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

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-02 · updated 2026-06-17
Weakness: CWE-295

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.

References

https://aws.amazon.com/security/security-bulletins/2026-004-AWS/
https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.256.0
https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.1.1
https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-62rc-f4v9-h543

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