Cleartext transmission of sensitive materials in aws/sagemaker-python-sdk
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure, Spoofing
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-319 and CWE-295.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AWS | SageMaker Python SDK | — | 3.2.0, 2.256.0 | Patch available | CNA |
| — | sagemaker (PyPI) | 3.0 to before 3.2.0 | 3.2.0 | Patch available | GHSA-rjrp-m2jw-pv9c |
| — | sagemaker (PyPI) | before 2.256.0 | 2.256.0 | Patch available | GHSA-rjrp-m2jw-pv9c |
- SageMaker Python SDK VendorAWS Affected — Fixed in 3.2.0, 2.256.0 Patch available CNA
- sagemaker (PyPI) Vendor— Affected 3.0 to before 3.2.0 Fixed in 3.2.0 Patch available GHSA-rjrp-m2jw-pv9c
- sagemaker (PyPI) Vendor— Affected before 2.256.0 Fixed in 2.256.0 Patch available GHSA-rjrp-m2jw-pv9c
Remediation
- Fix · CNA SageMaker Python SDK (AWS) Fixed in 3.2.0, 2.256.0
- Fix · GHSA-rjrp-m2jw-pv9c sagemaker (PyPI) Fixed in 3.2.0 Advisory →
- Fix · GHSA-rjrp-m2jw-pv9c sagemaker (PyPI) Fixed in 2.256.0 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
AWS SageMaker Python SDK — aws.amazon.com/security/security-bulletins/2026-004-AWS
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-01461 TLS disabled by default in select aws/sagemaker-python-sdk configurationsPriority LOW 35
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1777
- 2026-10-03 Alias added: GHSA-rjrp-m2jw-pv9c
References
Patch 2
Advisory 3
More AWS vulnerabilities
- TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2024-18648 Amazon AWS Amplify CLI before 12.10.1 incorrectly configures the role trust policy of IAM… CVSS 3.1CRITICAL 9.8
- TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
- TI-2025-03847 Input validation issue in AWS Amplify Studio UI component properties CVSS 4.0CRITICAL 9.0
- TI-2026-11603 HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF CVSS 4.0HIGH 7.9
Sources
- CVE-2026-1777 · CVE Program
- CVE-2026-1777 · NVD
- FIRST EPSS
- GHSA-rjrp-m2jw-pv9c · GitHub Advisory Database · CC BY 4.0
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