Sensitive data in a logger message detected.

• Rule ID: javascript_lang_logger
• Languages: javascript
• Source: logger.yml

Description

Leaking sensitive data to loggers is a common cause of data leaks and can lead to data breaches. This rule looks for instances of sensitive data sent to loggers.

Remediations

❌ Avoid using sensitive data in logger messages:

logger.info(`User is: ${user.email}`)

✅ If you need to identify a user, use their unique identifier instead of their personal identifiable information:

logger.info(`User is: ${user.uuid}`)

Resources

• OWASP logging cheat sheet

Associated CWE

• CWE-1295: Debug Messages Revealing Unnecessary Information
• CWE-532: Insertion of Sensitive Information into Log File

OWASP Top 10

• A09:2021 - Security Logging and Monitoring Failures

Configuration

To skip this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --skip-rule=javascript_lang_logger

To run only this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --only-rule=javascript_lang_logger