CVE-2026-1778Network attack vector

Code execution via globally disabled certificate verification

Published Feb 2, 2026 · Updated Feb 2, 2026

Improper certificate validation in Amazon SageMaker Python SDK v3 before 3.1.1 and v2 before 2.256.0 allows attackers to substitute HTTPS content. Importing a Triton Python model globally disables certificate verification in the backend, causing every HTTPS connection to accept invalid or self-signed certificates. Attackers must intercept the affected traffic and can replace downloaded models or dependencies, leading to code execution in the Triton container.

CVSS severity8.2
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Amazon SageMaker Python SDK v3 before 3.1.1 and v2 before 2.256.0 allows attackers to substitute HTTPS content. Importing a Triton Python model globally disables certificate verification in the backend, causing every HTTPS connection to accept invalid or self-signed certificates. Attackers must intercept the affected traffic and can replace downloaded models or dependencies, leading to code execution in the Triton container.

The record

CVE
CVE-2026-1778
Published
Feb 2, 2026
Updated
Feb 2, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-295, CAPEC-459, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.9AmazonCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
8.2AmazonCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
CAPEC-459Creating a Rogue Certification Authority Certificate
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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