GHSA-4hhf-mfx9-3877 · Package
NO FIX YET · SEE WHAT TO DO
CVE-2026-124034 lets a user with S3 write access to a hybrid job's input location overwrite arbitrary files with the job's privileges, via crafted S3 object keys. CVE-2026-124035 lets a user with S3 write access to the task output location run arbitrary code on any machine that retrieves the results, via a crafted task result document.
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, and any machine that parses Braket task results with amazon-braket-schemas. Exposure depends on who holds S3 write access to the Braket task-output and hybrid job input locations; restricting that access to trusted principals is the stated workaround.
Not affected if no-untrusted-s3-write-access, sdk-below-affected-range
Who cares amazon-braket, aws, lab-disclosure, python, quantum
amazon-braket-sdk with pip show amazon-braket-sdk; affected below 1.127.7.amazon-braket-schemas with pip show amazon-braket-schemas; affected below 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-sdk1.127.7>= 1.10.0< 1.127.7amazon-braket-schemas: 1.32.2 (CVE-2026-124035; affected >= 1.17.0 and < 1.32.2)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.