CRITICAL 9.4 NVD
CVE-2026-112408
Missing verification of source of a communication channel in the default_bucket() function in Amazon SageMaker Python SDK V3 before 3.10.0 and V2 before 2.257.3
Missing verification of source of a communication channel in the default_bucket() function in Amazon SageMaker Python SDK V3 before 3.10.0 and V2 before 2.257.3 might allow remote actors to achieve code execution in the target SageMaker execution environment and obtain IAM credentials via pre-creation of a predictably named S3 bucket that the SDK uses without ownership validation.
To remediate this issue, users should upgrade to Amazon SageMaker Python SDK 3.10.0 (V3) or 2.257.3 (V2).
References
- https://aws.amazon.com/security/security-bulletins/2026-142-aws/
- https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.257.3
- https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.10.0
- https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-5rx8-8fr2-f855
- https://pypi.org/project/sagemaker/2.257.3/
This critical severity vulnerability with a CVSS score of 9.4 was published on 2026-10-21 via NVD.
Risk Timeline
CVE Disclosed2026-10-21 · -1 days ago
Remediation Resources
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