CVE-2026-9291: CWE-502 Deserialization of untrusted data in AWS Amazon Braket Python SDK
Bulletin ID: 2026-036-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 05/22/2026 11:15 AM PDT Description: Amazon Braket SDK is an open-source Python library for interacting with the Amazon Braket quantum computing service, including managing hybrid quantum jobs and retrieving job results. We identified CVE-2026-9291, an insecure deserialization issue (CWE-502) in the job results processing component. The SDK's deserialize_values() function trusts the dataFormat field from an untrusted JSON file to control whether pickle.loads() is called on the data payload. A remote authenticated user with S3 write access to the job output bucket can modify the dataFormat field in results.json from PLAINTEXT to pickled_v4 and replace data values with executable payloads, achieving arbitrary code execution on any machine that processes job results. Impacted versions: >= 1.10.0 AND < 1.117.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-9291) affects the Amazon Braket Python SDK versions prior to 1.117.0. It is caused by insecure deserialization (CWE-502) in the job results processing component. An attacker with remote authenticated access and S3 write permissions to the job output bucket could exploit this flaw to execute arbitrary code on any machine processing the job results. The CVSS 3.1 base score is 7.1, reflecting high severity with network attack vector, high impact on confidentiality, integrity, and availability, and requiring low privileges and user interaction. AWS, as the vendor of this cloud service, manages remediation and advises upgrading the SDK to version 1.117.0 or later.
Potential Impact
Successful exploitation allows remote authenticated users with S3 write access to the job output bucket to execute arbitrary code on machines processing job results. This can lead to full compromise of the affected processing environment, impacting confidentiality, integrity, and availability of the system and data.
Mitigation Recommendations
AWS manages remediation for this cloud-hosted service. Users should upgrade the Amazon Braket Python SDK to version 1.117.0 or later to address this vulnerability. Check the AWS security bulletin at https://aws.amazon.com/security/security-bulletins/2026-036-aws/ for the latest guidance and confirmation of patch status.
CVE-2026-9291: CWE-502 Deserialization of untrusted data in AWS Amazon Braket Python SDK
Description
Bulletin ID: 2026-036-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 05/22/2026 11:15 AM PDT Description: Amazon Braket SDK is an open-source Python library for interacting with the Amazon Braket quantum computing service, including managing hybrid quantum jobs and retrieving job results. We identified CVE-2026-9291, an insecure deserialization issue (CWE-502) in the job results processing component. The SDK's deserialize_values() function trusts the dataFormat field from an untrusted JSON file to control whether pickle.loads() is called on the data payload. A remote authenticated user with S3 write access to the job output bucket can modify the dataFormat field in results.json from PLAINTEXT to pickled_v4 and replace data values with executable payloads, achieving arbitrary code execution on any machine that processes job results. Impacted versions: >= 1.10.0 AND < 1.117.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
CVSS v3.1
Score 7.1high
Affected software
AWS
Amazon Braket Python SDK
pkg:pypi/amazon-braket-sdk-pythonRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-9291) affects the Amazon Braket Python SDK versions prior to 1.117.0. It is caused by insecure deserialization (CWE-502) in the job results processing component. An attacker with remote authenticated access and S3 write permissions to the job output bucket could exploit this flaw to execute arbitrary code on any machine processing the job results. The CVSS 3.1 base score is 7.1, reflecting high severity with network attack vector, high impact on confidentiality, integrity, and availability, and requiring low privileges and user interaction. AWS, as the vendor of this cloud service, manages remediation and advises upgrading the SDK to version 1.117.0 or later.
Potential Impact
Successful exploitation allows remote authenticated users with S3 write access to the job output bucket to execute arbitrary code on machines processing job results. This can lead to full compromise of the affected processing environment, impacting confidentiality, integrity, and availability of the system and data.
Mitigation Recommendations
AWS manages remediation for this cloud-hosted service. Users should upgrade the Amazon Braket Python SDK to version 1.117.0 or later to address this vulnerability. Check the AWS security bulletin at https://aws.amazon.com/security/security-bulletins/2026-036-aws/ for the latest guidance and confirmation of patch status.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- AMZN
- Date Reserved
- 2026-05-22T17:08:22.626Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://aws.amazon.com/security/security-bulletins/2026-036-aws/","vendor":"AWS"}]
Threat ID: 6a10a423e1370fbb48342fe5
Added to database: 05/22/2026, 18:44:51 UTC
Last enriched: 06/08/2026, 22:17:18 UTC
Last updated: 09/13/2026, 22:01:38 UTC
Views: 149
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