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.

Scoring

Severity
HIGH
CVSS base score
8.5
CVSS 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
EPSS probability
0.38%
CWE
CWE-312
Published
2026-09-01
Last modified
2026-09-01

Affected products

Weakness type

Related vulnerabilities

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