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    CVE-2026-83551

    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.

    Published:Sep 1, 2026
    Last Modified:Sep 2, 2026
    EPS:Sep 1, 2026
    EPSS Score:0.00379
    CVSS Score:7.2

    Affected Products

    Vendor
    Amazon
    Product
    Sagemaker Python Sdk
    Vendor
    Aws
    Product
    Sagemaker-python-sdk

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-37 Retrieve Embedded Sensitive Data

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High