CVE-2026-83551CWE-312

CVE-2026-83551

High · published September 1, 2026

CVSS v3.1
7.2
EPSS
0%
Percentile
31.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.5 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H
EPSS
0.00379 · 31.0th percentile
Weakness
CWE-312 · Cleartext Storage of Sensitive Information
Published
2026-09-01T23:17Z
References (4)
https://aws.amazon.com/security/security-bulletins/2026-093-aws/ · ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.256.0 · ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.11.0 · ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-7xmc-crrw-fv5r · ff89ba41-3aa1-4d27-914a-91399e9639e5
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 01 SEP 18:11Z
    Cleartext storage of HMAC signing key in Amazon SageMaker Python SDK @step/@remote pipeline path
    cvelistv5