Medium 5.9Published Feb 2, 2026

CVE-2026-1778TLS disabled by default in select aws/sagemaker-python-sdk configurations

Updated under an hour ago (Oct 27, 2026, 4:10 AM ET)

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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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Every CVE for AWS SageMaker Python SDK

Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-295
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: Deferred
Record last updated: Feb 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

AWS SageMaker Python SDK aws:sagemaker_python_sdk (from the name)	3.1.1 not affected; 2.256.0 not affected	CNA record

References

References

https://aws.amazon.com/security/security-bulletins/2026-004-AWS/	vendor-advisory
https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-62rc-f4v9-h543	third-party-advisory
https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.1.1	patch
https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.256.0	patch

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.