Malicious Code Vulnerability in node-calculator-f483 Package

node-calculator-f483 Updated 24 Dec 2025

Summary

23/12/2025
CRITICAL
No i
Critical
Not published

MAL-2025-192844: Malicious code in node-calculator-f483 (npm). Affects node-calculator-f483 versions 3.3.0 – 3.7.0. No fix is published. How to fix ↓

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Background

The node-calculator-f483 package is a JavaScript library designed for performing various mathematical calculations in Node.js applications. It offers features such as basic arithmetic operations, advanced calculations, and utility functions. However, this package has been identified to contain malicious code that can compromise the security of applications using it.

Vulnerability Detail

The vulnerability in the node-calculator-f483 package arises from the inclusion of malicious code that can execute unauthorized actions within the user's environment. This code can potentially lead to data theft, unauthorized access, or system compromise. The malicious nature of this vulnerability was reported by ReversingLabs, which identified specific versions of the package that are affected, including versions 3.3.0 to 3.7.0. The origin of this vulnerability is linked to the package being compromised, which raises significant concerns regarding the integrity of open-source software.

How To Fix

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

npm uninstall node-calculator-f483

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 remove the node-calculator-f483 package from your project until a secure version is released. You can do this by running the command: npm uninstall node-calculator-f483. Consider using alternative packages that provide similar functionality without the associated risks.

Conclusion

The node-calculator-f483 package has been identified as containing malicious code that poses a significant security risk to applications using it. Users are advised to update to a patched version or remove the package until a secure version is available. Utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.

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FAQ

The node-calculator-f483 package is a JavaScript library for performing mathematical calculations in Node.js applications.

The affected versions include 3.3.0, 3.4.0, 3.5.0, 3.6.0, and 3.7.0.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without requiring any signup.

If you cannot update the package right away, consider removing it from your project as a temporary measure until a secure version is available.

The vulnerability was reported by ReversingLabs, a cybersecurity firm specializing in threat intelligence.

How To Fix

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

npm uninstall node-calculator-f483

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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