PT-2026-41117 · Amazon Sagemaker Python Sdk · Aws

Published 2026-05-14 · Updated 2026-05-14 · CVE-2026-8596

NVD

CVSS v3.1

7.2

High

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Cleartext storage of sensitive information in the ModelBuilder/Serve component in Amazon SageMaker Python SDK before v2.257.2 and v3 before v3.8.0 might allow a remote authenticated actor to extract the HMAC signing key from SageMaker API responses and forge valid integrity signatures for specially crafted model artifacts, achieving code execution in inference containers. This issue requires a remote authenticated actor with permissions to call SageMaker describe APIs and S3 write access to the model artifact path.

To remediate this issue, we recommend upgrading to Amazon SageMaker Python SDK v2.257.2 or v3.8.0 and rebuild any models previously created with ModelBuilder using the updated SDK.

Fix

Cleartext Storage of Sensitive Information

Weakness Enumeration

CWE-312

Related Identifiers

CVE-2026-8596

Affected Products

Aws

References · 5

• https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.257.2 · Patch
• https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.8.0 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-8596 · Security Note
• https://aws.amazon.com/security/security-bulletins/2026-031-aws · Vendor Advisory
• https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-7hh5-prp2-mfh5 · Note