Critical Malicious Code Vulnerability in pretty-loggers Package
Summary
MAL-2026-1964: Malicious code in pretty-loggers (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The pretty-loggers package is an npm library designed to enhance logging capabilities in JavaScript applications. It provides developers with a simple interface to format and display log messages in a more readable manner. However, this package has been identified as containing malicious code that compromises the security of any system it is installed on.
Vulnerability Detail
The vulnerability originates from the inclusion of malicious code within the pretty-loggers package. This code can lead to full system compromise, allowing unauthorized access to sensitive information such as secrets and keys stored on the affected computer. The malicious nature of the code is classified under CWE-506, indicating that it embeds harmful functionality within the software. Users are advised to treat any system with this package installed as fully compromised.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall pretty-loggersIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a workaround, if you need logging functionality, consider using alternative logging packages that are known to be secure. Some popular alternatives include winston and bunyan. You can install them using npm as follows:
npm install winston
or
npm install bunyan
Conclusion
The pretty-loggers package has been identified as containing malicious code that poses a significant security risk. Users are strongly advised to uninstall the package immediately and take necessary precautions to secure their systems. Utilizing tools like Vulert can help monitor for such vulnerabilities in the future.
See every vulnerability recorded for pretty-loggers →
FAQ
Immediately uninstall the package using 'npm uninstall pretty-loggers' and rotate any sensitive information stored on the affected system.
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No, there is currently no patched version available for pretty-loggers. The only solution is to remove the package.
Leaving the package installed can lead to unauthorized access to your system, potentially compromising sensitive data and allowing malicious actors to control your environment.
Yes, consider using secure logging packages such as winston or bunyan as alternatives to pretty-loggers.
