# CVE-2026-127119: Unverified ownership of the default EMR cluster log location in AWS SDK for pandas

Status: published. Published: 2026-11-12. Updated: 2026-11-12.

Unverified ownership of the default cluster log location in the EMR module in AWS SDK for pandas (awswrangler) from 1.1.0 before 3.18.0 might allow remote actors to read Amazon EMR cluster logs, including job step output, via a pre-created S3 bucket.



To remediate this issue, users should upgrade to version 3.18.0 or later. Users who can't upgrade immediately should pass an explicit log location, or create the default EMR log bucket in their own account in each region they use.

## 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-sdk-pandas/releases/tag/3.18.0

## Affected products and versions

- AWS / aws-sdk-pandas: ≥ 1.1.0; < 3.18.0 (affected, custom). Source: CNA: AMZN

## Severity and prioritization

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N; source: CNA: AMZN

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

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-283, CWE-341

## Exploit evidence

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

## References

- https://github.com/aws/aws-sdk-pandas/releases/tag/3.18.0 (CNA: AMZN; release-notes, patch)

- https://aws.amazon.com/security/security-bulletins/2026-181-aws/ (CNA: AMZN; vendor-advisory)

## Provenance

- CNA: AMZN: https://www.cve.org/CVERecord?id=CVE-2026-127119; retrieved 2026-11-12; source updated 2026-11-12

Revision: 18629dfa264f08a423b8f2fbce55f9f45b43757c974365348d13f5137b38e075

Canonical: https://y2.dev/cve/CVE-2026-127119

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