CVE-2026-112408
Published:October 21, 2026
Updated:October 22, 2026
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).
Affected Packages
https://github.com/aws/sagemaker-python-sdk.git (GITHUB):
Affected version(s) >=v2.95.0 <v2.257.3Fix Suggestion:
Update to version v2.257.3https://github.com/aws/sagemaker-python-sdk.git (GITHUB):
Affected version(s) >=v3.0.0 <v3.10.0Fix Suggestion:
Update to version v3.10.0sagemaker-core (PYTHON):
Affected version(s) >=2.0 <2.10.0Fix Suggestion:
Update to version 2.10.0sagemaker (PYTHON):
Affected version(s) >=2.95.0 <2.257.3Fix Suggestion:
Update to version 2.257.3Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Verification of Source of a Communication Channel
EPSS
Base Score:
0.72