RewindexCVEsAmazon Web Services
CVE-2026-112408: Missing bucket ownership verification in Amazon SageMaker Python SDK default_bucket()
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).
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H · CWE-940
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
AWS: Amazon SageMaker Python SDK
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- aws.amazon.com/security/security-bulletins/2026-142-aws/ (opens in new tab)
- github.com/aws/sagemaker-python-sdk/releases/tag/v2.257.3 (opens in new tab)
- github.com/aws/sagemaker-python-sdk/releases/tag/v3.10.0 (opens in new tab)
- github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-5rx8-8fr2-f855 (opens in new tab)
- pypi.org/project/sagemaker/2.257.3/ (opens in new tab)
- pypi.org/project/sagemaker/3.10.0/ (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)