# CVE-2026-124033: Relative path traversal in the log export commands in AWS ParallelCluster CLI

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

The export-cluster-logs and export-image-logs commands in the AWS ParallelCluster CLI before version 3.16.0 contain a relative path traversal issue. An authenticated remote user with write access to the log export Amazon S3 bucket could use a crafted S3 object key to write files outside the intended export directory on the machine running the command. The written files would have names and content controlled by a third party, and would be created with the privileges of the user running the command.



To remediate this issue, users should upgrade to version 3.16.0 or later.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: AMZN) — https://github.com/aws/aws-parallelcluster/releases/tag/v3.16.0

## Affected products and versions

- AWS / aws-parallelcluster: ≥ 3.0.0; < 3.16.0 (affected, custom). Source: CNA: AMZN

## Severity and prioritization

- CVSS 3.1: 6.4 (medium); CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:H; source: CNA: AMZN

- CVSS 4.0: 5.9 (medium); CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: AMZN

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-23

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/aws/aws-parallelcluster/releases/tag/v3.16.0 (CNA: AMZN; release-notes, patch)

- https://aws.amazon.com/security/security-bulletins/2026-174-aws/ (CNA: AMZN; vendor-advisory)

- https://github.com/aws/aws-parallelcluster/security/advisories/GHSA-h79v-mp93-644r (CNA: AMZN; third-party-advisory)

## Provenance

- CNA: AMZN: https://www.cve.org/CVERecord?id=CVE-2026-124033; retrieved 2026-11-09; source updated 2026-11-09

Revision: b5bc102b715e22c39ee6de2659bc36078566b8b1c83551305351d97fb44f40d0

Canonical: https://y2.dev/cve/CVE-2026-124033

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