What is CVE-2026-1777?

CVE-2026-1777 is a high-severity vulnerability in Aws Sagemaker Python Sdk, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.2/10. Published 2026-02-02.

How severe is CVE-2026-1777?

High severity. CVSS v3 base score is 7.2 out of 10.

Vulnerability in Aws Sagemaker Python Sdk

CVE-2026-1777

The Amazon SageMaker Python SDK before v3.2.0 and v2.256.0 includes the ModelBuilder HMAC signing key in the cleartext response elements of the DescribeTrainingJob function. A third party with permissions to both call this API and permissions to modify objects in the Training Jobs S3 output location may have the ability to upload arbitrary artifacts which are executed the next time the Training Job is invoked.

EPSS: 0.005 (37.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Aws Sagemaker Python Sdk — versions 3.2.0, 2.256.0

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (third-party-advisory)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (patch)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (patch)

Frequently asked questions

What is CVE-2026-1777?: CVE-2026-1777 is a high-severity vulnerability in Aws Sagemaker Python Sdk, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.2/10. Published 2026-02-02.
How severe is CVE-2026-1777?: High severity. CVSS v3 base score is 7.2 out of 10.