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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
AWS sagemaker-python-sdk unaffected
Version Status Constraints
0 affected < 3.11.0
0 affected < 2.256.0

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Aws Subscribe
Sagemaker-python-sdk Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://aws.amazon.com/security/security-bulletins/2026-093-aws/ cve-icon cve-icon
https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.256.0 cve-icon cve-icon
https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.11.0 cve-icon cve-icon
https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-7xmc-crrw-fv5r cve-icon cve-icon
History

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'}

Projects

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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

No data.

cve-icon NVD

Status : Received

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

Modified: 2026-09-01T20:17:24.387

Link: CVE-2026-83551

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses