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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
Active
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
References 3
https://aws.amazon.com/security/security-bulletins/2026-181-aws/
ff89ba41-3aa1-4d27-914a-91399e9639e5
https://github.com/aws/aws-sdk-pandas/releases/tag/3.18.0
ff89ba41-3aa1-4d27-914a-91399e9639e5
https://github.com/aws/aws-sdk-pandas/security/advisories/GHSA-3rgm-255m-m9g5
ff89ba41-3aa1-4d27-914a-91399e9639e5