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PatchSiren cyber security CVE debrief

CVE-2026-9291 AWS CVE debrief

CVE-2026-9291 describes a vulnerability in the Amazon Braket SDK, specifically in the job results processing component. The issue is related to insecure deserialization, which might allow a remote authenticated user with S3 write access to the job output bucket to achieve arbitrary code execution on any machine that processes job results. The vulnerability has a CVSS score of 7.5 and is classified as HIGH. Users of Amazon Braket SDK, especially those with S3 write access to job output buckets, should be aware of this vulnerability and take necessary actions to mitigate the risk.

Vendor
AWS
Product
Amazon Braket Python SDK
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-22
Original CVE updated
2026-07-23
Advisory published
2026-05-22
Advisory updated
2026-07-23

Who should care

Users of Amazon Braket SDK, especially those with S3 write access to job output buckets, should be aware of this vulnerability and take necessary actions to mitigate the risk. This includes reviewing and monitoring S3 buckets for suspicious activity and implementing additional security measures for job output buckets. Affected operators, platform administrators, vulnerability management teams, and security teams should prioritize updating the Amazon Braket SDK to version 1.117.0 or later.

Technical summary

The vulnerability exists in the job results processing component of the Amazon Braket SDK before version 1.117.0. Insecure deserialization could allow a remote authenticated user with S3 write access to the job output bucket to execute arbitrary code on machines processing job results. The CVSS vector is CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. Affected product context includes Amazon Braket SDK deployments with S3 write access to job output buckets.

Defensive priority

High priority should be given to updating the Amazon Braket SDK to version 1.117.0 or later. Users with S3 write access to job output buckets should be cautious of potential exploitation attempts and review compensating controls for exposed systems while remediation is scheduled and verified.

Recommended defensive actions

  • Upgrade to amazon-braket-sdk version 1.117.0 or later
  • Review and monitor S3 buckets for suspicious activity
  • Implement additional security measures for job output buckets
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record was published on 2026-05-22T19:17:05.340Z and was last modified on 2026-07-23T12:10:00.110Z. The NVD entry is currently Awaiting Analysis. This vulnerability affects the Amazon Braket SDK, specifically in the job results processing component, and has a CVSS score of 7.5. Users should verify their deployments and review official advisories for affected scope and vendor guidance.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-05-22T19:17:05.340Z and has not been modified since then. The NVD entry is currently Awaiting Analysis.