CVE-2026-112408

Missing bucket ownership verification in Amazon SageMaker Python SDK default_bucket()

HIGH
8.1
CVSS Score
Published: October 21, 2026 at 07:36 PM UTC
Updated: October 22, 2026 at 05:21 PM UTC
1 product affected across 1 vendorSageMaker Python SDK

Using Amazon SageMaker Python SDK by AWS?

Get instant alerts when new vulnerabilities affect Amazon SageMaker Python SDK - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.1
Exploit prediction
EPSS 0.7%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CVSS

8.1HIGHAMZN
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-940

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card