What is CVE-2026-1778?

CVE-2026-1778 is a medium-severity vulnerability in Aws Sagemaker Python Sdk, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2026-02-02.

How severe is CVE-2026-1778?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Aws Sagemaker Python Sdk

CVE-2026-1778

Amazon SageMaker Python SDK before v3.1.1 or v2.256.0 disables TLS certificate verification for HTTPS connections made by the service when a Triton Python model is imported, incorrectly allowing for requests with invalid and self-signed certificates to succeed.

Vulnerability class: Improper Certificate Validation

EPSS: 0.002 (15.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Aws Sagemaker Python Sdk — versions 3.1.1, 2.256.0

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

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-2026-1778?: CVE-2026-1778 is a medium-severity vulnerability in Aws Sagemaker Python Sdk, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2026-02-02.
How severe is CVE-2026-1778?: Medium severity. CVSS v3 base score is 5.9 out of 10.