Python
CVE-2026-1777
HIGH
GHSA-rjrp-m2jw-pv9c
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
The Amazon SageMaker Python SDK before v3.2.0 and v2.256.0 includes the ModelBuilder HMAC signing key in the cleartext response elements of the DescribeTrainingJob function. A third party with permissions to both call this API and permissions to modify objects in the Training Jobs S3 output location may have the ability to upload arbitrary artifacts which are executed the next time the Training Job is invoked.
AnalysisAI
Amazon SageMaker Python SDK versions before 3.2.0 and 2.256.0 expose the ModelBuilder HMAC signing key in cleartext API responses, allowing authenticated users with S3 bucket write access to inject malicious artifacts into training jobs that execute with elevated privileges. An attacker with dual permissions to call the DescribeTrainingJob API and modify the training output S3 location can achieve arbitrary code execution when the compromised job runs. No patch is currently available for this vulnerability.
Technical ContextAI
Classified as CWE-319 (Cleartext Transmission of Sensitive Information). The Amazon SageMaker Python SDK before v3.2.0 and v2.256.0 includes the ModelBuilder HMAC signing key in the cleartext response elements of the DescribeTrainingJob function. A third party with permissions to both call this API and permissions to modify objects in the Training Jobs S3 output location may have the ability to upload arbitrary artifacts which are executed the next time the Training Job is invoked.
Affected ProductsAI
The Amazon SageMaker Python SDK before v3.2.0 and v2.256.0 includes the ModelBuilder HMAC signing key in the cleartext response elements of the Descri
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
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External POC / Exploit Code
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