CVE-2026-83551
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.
- Published Sep 1, 2026
- CVSS 8.5 high
- 0.6% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Affected software
In the news
- CVE-2026-83551 - Cleartext storage of HMAC signing key in Amazon SageMaker Python SDK AWS Security Bulletins ·