GHSA-9r5x-g8jm-9mjj · Package
NO FIX YET · SEE WHAT TO DO
Two flaws in the Amazon Braket Python SDK and its Schemas library let a user with S3 write access overwrite arbitrary files when hybrid job inputs are downloaded, and execute arbitrary code on machines that retrieve quantum task results. Exploitation needs an authenticated user who can write to the relevant S3 locations.
first public Nov 9, 2026 · 1 source
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Teams that run the Amazon Braket SDK to submit quantum tasks and hybrid jobs, or that retrieve quantum task results with the Braket Schemas library, are exposed. The risk depends on whether untrusted principals can write to the Braket task-output or local-job input S3 locations. Teams that do not use these packages, or that restrict S3 write access to trusted principals, can skip it.
Not affected if amazon-braket-sdk-not-used, s3-write-restricted-to-trusted-principals
Who cares amazon-braket, aws, lab-disclosure, python, quantum, s3
pip show amazon-braket-sdk and pip show amazon-braket-schemas.amazon-braket-sdk from 1.10.0 to before 1.127.7, and amazon-braket-schemas from 1.17.0 to before 1.32.2.CVE-2026-124034, CVE-2026-124035: Issues with Amazon Braket SDK
Bulletin ID: 2026-175-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 11/09/2026 14:15 PM PST
Description:
Amazon Braket SDK is an open source Python library that customers use to run quantum tasks and hybrid jobs on Amazon Braket and retrieve their results, and it uses the Amazon Braket Schemas library to parse task results.
We identified CVE-2026-124034, an issue in the local hybrid job input data download in the Amazon Braket SDK. A remote authenticated user with S3 write access to a hybrid job's input data location might be able to overwrite arbitrary files, with the privileges of the user running the job, by supplying crafted S3 object keys.
We identified CVE-2026-124035, an issue in the error mitigation schema validation in Amazon Braket Schemas, the library the Amazon Braket SDK uses to parse quantum task results. A remote authenticated user with S3 write access to the quantum task output location might be able to execute arbitrary code on any machine that retrieves the quantum task results by supplying a crafted task result document. Please note, this is a follow-on fix to the prior advisory CVE-2026-9291.
Impacted versions:
Resolution:
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amazon-braket-sdk: upgrade to 1.127.7 or later.amazon-braket-schemas: upgrade to 1.32.2 or later.Workarounds:
Restrict S3 write access to the Braket task-output and local-job input data locations (and the job's IAM role) to trusted principals.
References:
Acknowledgement:
We would like to thank Eva Crystal (0xiviel), XSource Security for collaborating on this issue through the coordinated issue disclosure process.
Please email aws-security@amazon.com with any s ecurity questions or concerns.