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Description

Missing integrity verification in the Triton inference handler in Amazon SageMaker Python SDK v2 before v2.257.2 and v3 before v3.8.0 might allow a remote authenticated actor to achieve code execution in inference containers via replacement of model artifacts in S3 with a specially crafted pickle payload that is deserialized without verification. This issue requires a remote authenticated actor with S3 write access to the model artifact path. To remediate this issue, we recommend upgrading to Amazon SageMaker Python SDK v2.257.2 or v3.8.0 and rebuild any Triton models previously created with ModelBuilder using the updated SDK.

PUBLISHED Reserved 2026-05-14 | Published 2026-05-14 | Updated 2026-05-16 | Assigner AMZN




HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

MEDIUM: 6.4CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

Problem types

CWE-354 Improper validation of integrity check value

Product status

Default status
unaffected

2.199.0 (custom)
affected

3.0.0 (custom)
affected

References

github.com/aws/sagemaker-python-sdk/releases/tag/v2.257.2 patch

github.com/aws/sagemaker-python-sdk/releases/tag/v3.8.0 patch

aws.amazon.com/security/security-bulletins/2026-031-aws/ vendor-advisory

github.com/...on-sdk/security/advisories/GHSA-rq6v-x3j8-7qgf third-party-advisory

cve.org (CVE-2026-8597)

nvd.nist.gov (CVE-2026-8597)

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