Malicious Code Detected in corelyzer: A Critical npm Vulnerability
Summary
MAL-2025-17581: Malicious code in corelyzer (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The corelyzer package is an npm library designed to assist developers in analyzing and visualizing code quality metrics. It offers features such as performance tracking and code complexity analysis. However, it has been identified as containing malicious code, which poses significant security risks to applications relying on this package.
Vulnerability Detail
The vulnerability in the corelyzer package stems from the inclusion of malicious code that can compromise the security of applications using it. This code may lead to unauthorized access, data breaches, or other harmful actions within the affected systems. The issue originated from the package's version 0 and has been flagged as a serious threat by security researchers.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall corelyzerIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, you can avoid using the corelyzer package until a secure version is released. Consider using alternative packages that provide similar functionality without the associated risks.
Conclusion
The corelyzer package has been identified as containing malicious code, posing significant security risks to applications. It is crucial for developers to remove this package and seek alternatives to ensure the safety of their software. Monitoring tools like Vulert can assist in identifying vulnerabilities in real-time.
See every vulnerability recorded for corelyzer →
FAQ
Corelyzer is an npm package used for analyzing and visualizing code quality metrics in software development.
The malicious code can lead to unauthorized access and potential data breaches within applications that utilize the corelyzer package.
You can use Vulert, which monitors open-source vulnerabilities in real-time. By analyzing your package-lock.json file, Vulert can alert you to any vulnerabilities, including those in corelyzer.
The best mitigation strategy is to remove the corelyzer package and replace it with a secure alternative until a patched version is released.
Detailed information about this vulnerability can be found on the GitHub repository of the malicious packages project.
