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[HIGH] · HackerOne · Resolved

# Default Credentials Leading to Administrative Access and Sensitive Data Exposure in MinIO UAT Environment

Ali Essam Ali Essam ████████ $750 18 Aug 2026

The affected asset is redacted at the researcher's request.

I discovered a MinIO instance belonging to A.S. Watson Group's UAT environment that was accessible using default credentials:

Access Key: admin
Secret Key: admin1234

These credentials provided administrative access to the MinIO management interface without requiring any additional authentication or authorization.

The affected instance was accessible at:

https://uat-mpimage.app.aswatson.com/

The MinIO browser was additionally exposed through:

https://uat-mpimage.app.aswatson.com/minio/adobe/

After authenticating with the default credentials, I was able to access the administrative interface and interact with the storage environment.

During further investigation, I discovered approximately 200 GB of files and subsequently identified an exposed config.properties file containing database-related information and SMTP configuration details.