CVE-2026-124034 · Package
NO FIX YET · SEE WHAT TO DO
The Amazon Braket SDK, a Python library, has two flaws that need S3 write access to the job or task locations. A crafted S3 object key can overwrite arbitrary files as the user running the job, and a crafted task result document can execute code on any machine that retrieves the results.
first public Nov 9, 2026 · 2 sources
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Teams that run the Braket SDK or Braket Schemas library in Python, especially where hybrid job input or quantum task output lives in S3 locations that other principals can write to. The schemas flaw affects any machine that retrieves task results, so check consumers as well as job runners. Teams not using these packages, or where S3 write access is restricted to trusted principals, are less exposed.
Not affected if no-s3-write-access-by-others, package-not-installed
Who cares amazon-braket, aws, lab-disclosure, python, s3
pip show amazon-braket-sdk and pip show amazon-braket-schemas1.10.0 and before 1.127.7, or amazon-braket-schemas at or after 1.17.0 and before 1.32.2CVE-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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1.127.71.32.2Workarounds:
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.
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