Cleartext storage of sensitive information in the @step and @remote decorator pipeline component in Amazon SageMaker Python SDK before v3.11.0 and v2.256.0 might allow an authenticated remote user to extract the HMAC signing key from SageMaker DescribePipeline API responses and forge valid integrity signatures for specially crafted function payloads, achieving code execution in another user's pipeline execution context within the same AWS account.
History

Thu, 03 Sep 2026 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Amazon
Amazon sagemaker Python Sdk
Vendors & Products Amazon
Amazon sagemaker Python Sdk

Wed, 02 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Description Cleartext storage of sensitive information in the @step and @remote decorator pipeline component in Amazon SageMaker Python SDK before v3.11.0 and v2.256.0 might allow an authenticated remote user to extract the HMAC signing key from SageMaker DescribePipeline API responses and forge valid integrity signatures for specially crafted function payloads, achieving code execution in another user's pipeline execution context within the same AWS account.
Title Cleartext storage of HMAC signing key in Amazon SageMaker Python SDK @step/@remote pipeline path
First Time appeared Aws
Aws sagemaker-python-sdk
Weaknesses CWE-312
CPEs cpe:2.3:a:aws:sagemaker-python-sdk:*:*:*:*:*:*:*:*
Vendors & Products Aws
Aws sagemaker-python-sdk
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-09-01T19:13:51.035Z

Reserved: 2026-08-31T18:27:06.063Z

Link: CVE-2026-83551

cve-icon Vulnrichment

Updated: 2026-09-01T19:13:48.216Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-01T19:17:29.483

Modified: 2026-09-03T16:44:01.873

Link: CVE-2026-83551

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T22:10:23Z