CVE-2026-83551: Aws Sagemaker-Python-SDK

High severity, CVSS 7.2. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Aws Sagemaker-Python-SDK: before 3.11.0 (fixed in 3.11.0); before 2.256.0 (fixed in 2.256.0)

Published 2026-09-01. Last modified 2026-09-03.