BaseFortify

Publication date: 2026-05-14

Last updated on: 2026-05-15

Assigner: AMZN

Description

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-14

Last Modified

2026-05-15

Generated

2026-06-30

EPSS Evaluated

2026-06-28

NVD

CVE-2026-8596

EUVD

EUVD-2026-30420

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-312	The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.

Attack-Flow Graph

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