CVE-2026-83551

Published: Sep 1, 2026Modified: Sep 3, 2026

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5 (Secondary)

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.

Related CWEs

CWE-312

Cleartext Storage of Sensitive Information

The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.

References (4)

https://aws.amazon.com/security/security-bulletins/2026-093-aws/

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.256.0

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.11.0

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-7xmc-crrw-fv5r

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

Timeline

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