Bulletin ID: 2026-181-AWS
Publication Date: 11/12/2026 13:00 PM PST
Description:
We identified CVE-2026-127119, an issue in the EMR module of AWS SDK for pandas (awswrangler) from version 1.1.0 before 3.18.0. When a cluster is created without an explicit log location, the library uses a predictable default S3 bucket name for the cluster logs without verifying that the caller's account owns that bucket. A remote actor who creates that bucket first could read the cluster's logs, including job step output.
Impacted versions: >= 1.1.0 AND < 3.18.0
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CVE-2026-127119 – Unverified ownership of the default EMR cluster log location in AWS SDK for pandas