CVE-2026-83551Cleartext storage of HMAC signing key in Amazon SageMaker Python SDK @step/@remote pipeline path
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It affects AWS sagemaker-python-sdk. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Cleartext storage of sensitive information in the @step and @remote decorator pipeline component in Amazon SageMaker Python SDK before v3.11.0 and v2.256.0 might allow an authenticated remote user to extract the HMAC signing key from SageMaker DescribePipeline API responses and forge valid integrity signatures for specially crafted function payloads, achieving code execution in another user's pipeline execution context within the same AWS account.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-312
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- AMZN
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
AWS sagemaker-python-sdk aws:sagemaker_python_sdk (from the name) | before 3.11.0; before 2.256.0 | CNA record |
References
- https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.256.0patch, release-notes
- https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.11.0patch, release-notes
- https://aws.amazon.com/security/security-bulletins/2026-093-aws/vendor-advisory
- https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-7xmc-crrw-fv5rrelease-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.