---
title: "CVE-2026-112408: Amazon SageMaker Python SDK - Remote Code Execution & Privilege Escalation"
description: "Amazon SageMaker Python SDK V3 < 3.10.0 and V2 < 2.257.3 contain a remote code execution caused by missing verification of source in default_bucket() function, letting remote attackers execute code and obtain IAM credentials via predictably named S3 bucket, exploit requires attacker to pre-create the bucket."
url: https://panop.io/threat-heartbeat/CVE-2026-112408/
---

# CVE-2026-112408 Amazon SageMaker Python SDK - Remote Code Execution & Privilege Escalation

Amazon SageMaker Python SDK V3 < 3.10.0 and V2 < 2.257.3 contain a remote code execution caused by missing verification of source in default\_bucket() function, letting remote attackers execute code and obtain IAM credentials via predictably named S3 bucket, exploit requires attacker to pre-create the bucket.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-112408)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution, Privilege Escalation

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

21 October 2026

Updated

22 October 2026

Weakness

[CWE-940](https://cwe.mitre.org/data/definitions/940.html)

## Vendor fix

Upgrade to Amazon SageMaker Python SDK V3 3.10.0 or V2 2.257.3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-112408](https://nvd.nist.gov/vuln/detail/CVE-2026-112408)
- [https://aws.amazon.com/security/security-bulletins/2026-142-aws/](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/v2.257.3)
- [https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.10.0](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://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-5rx8-8fr2-f855)
- [https://pypi.org/project/sagemaker/2.257.3/](https://pypi.org/project/sagemaker/2.257.3/)
- [https://pypi.org/project/sagemaker/3.10.0/](https://pypi.org/project/sagemaker/3.10.0/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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