Critical Malicious Code Vulnerability in preset-log Package
Summary
MAL-2025-5791: Malicious code in preset-log (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The preset-log package is an npm library designed for logging purposes in JavaScript applications. It provides developers with a simple interface to log messages, errors, and other information. However, this package has been identified to contain malicious code, which poses a significant security risk to any system that has it installed.
Vulnerability Detail
The vulnerability originates from the inclusion of embedded malicious code within the preset-log package. This code can compromise the security of any computer that has the package installed, potentially allowing unauthorized access to sensitive information such as secrets and keys. The ramifications of this vulnerability are severe, as it may lead to data breaches and loss of control over the affected systems.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall preset-logIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a workaround, ensure that all secrets and keys stored on the affected computer are rotated immediately from a different, secure computer. This action helps mitigate the risk of unauthorized access to sensitive information.
Conclusion
The preset-log package contains embedded malicious code that poses a significant security risk. Immediate action is required to remove the package and secure any sensitive information. Monitoring tools like Vulert can help keep your applications safe from future vulnerabilities.
See every vulnerability recorded for preset-log →
FAQ
preset-log is an npm package used for logging in JavaScript applications, allowing developers to log messages and errors easily.
The malicious code can compromise your system's security, potentially allowing unauthorized access to sensitive information and control over your computer.
You should immediately remove the preset-log package from your project and rotate any secrets or keys stored on the affected system.
Currently, there is no patched version available. The best course of action is to remove the package entirely.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just the package-lock.json file. You can check if your application is affected by this vulnerability using the Vulert playground without any signup.
