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.
CVE-2026-1778
This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 99% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.9
- EG Score
- 5.9(medium)
- EPSS
- 15.7%
- KEV
- Not listed
Published
February 2, 2026
Last Modified
April 15, 2026
References (4)
- ff89ba41-3aa1-4d27-914a-91399e9639e5https://aws.amazon.com/security/security-bulletins/2026-004-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/v3.1.1
- ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-62rc-f4v9-h543
Vendor Advisories for CVE-2026-1778(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| sagemaker | 1.0.0 ... 2.99.0 (650 versions) | 2.256.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 42× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Related CVEs(same CWE)
Same CWE
10 shownCWE-295
Frequently asked(5)
What is CVE-2026-1778?
When was CVE-2026-1778 disclosed?
Is CVE-2026-1778 actively exploited?
What is the CVSS score of CVE-2026-1778?
How do I remediate CVE-2026-1778?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-1778
Is Your Infrastructure Affected by CVE-2026-1778?
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