Malicious Code Vulnerability in node-calculator-de84: A Threat to npm Users

node-calculator-de84 Updated 19 Nov 2025

Summary

17/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-190542: Malicious code in node-calculator-de84 (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

node-calculator-de84 is an npm package designed for performing basic arithmetic calculations. It is intended to provide users with a simple interface for mathematical operations. However, the package has been identified to contain malicious code, which poses significant security risks to applications that utilize it.

Vulnerability Detail

The vulnerability in node-calculator-de84 stems from the presence of malicious code that can compromise the security of applications using this package. This code can potentially lead to unauthorized access, data breaches, or other malicious activities. The issue was reported by Amazon Inspector, highlighting the need for immediate attention from developers using this package.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall node-calculator-de84

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

As a temporary workaround, you can avoid using the node-calculator-de84 package altogether and consider alternative packages that provide similar functionality without the associated risks. Always review the security status of any package before integrating it into your project.

Conclusion

The discovery of malicious code in the node-calculator-de84 package poses a significant threat to users and developers. Immediate action is required to remove the package and replace it with a secure alternative. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities in open-source software effectively.

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FAQ

The malicious code can potentially allow unauthorized access or manipulation of data within applications that use the package.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without any signup.

It is crucial to remove the package immediately and replace it with a secure alternative to mitigate any potential risks.

Yes, consider using other well-reviewed npm packages for arithmetic calculations, such as mathjs or decimal.js, which do not have known vulnerabilities.

Regularly check for updates and security advisories on npm packages you use, and consider using tools like Vulert for real-time monitoring.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall node-calculator-de84

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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