Malicious Code Detected in node-calculator-215d: A Critical Vulnerability

node-calculator-215d Updated 19 Nov 2025

Summary

17/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-190528: Malicious code in node-calculator-215d (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

node-calculator-215d is an npm package designed for performing basic arithmetic calculations. It is intended for developers looking to integrate simple calculator functionalities into their applications. However, this package has been compromised, containing malicious code that poses significant security risks to any application utilizing it.

Vulnerability Detail

The vulnerability originates from the discovery of malicious code embedded within the node-calculator-215d package. This code can lead to unauthorized access, data breaches, or other harmful actions within the applications that incorporate this package. The malicious code was identified by Amazon Inspector, raising concerns about the integrity and security of software relying on this package.

How To Fix

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

npm uninstall node-calculator-215d

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-215d package altogether and implement basic arithmetic functions manually in your code. For example:

function add(a, b) {
  return a + b;
}

function subtract(a, b) {
  return a - b;
}

function multiply(a, b) {
  return a * b;
}

function divide(a, b) {
  if (b === 0) throw new Error('Cannot divide by zero');
  return a / b;
}

Conclusion

The discovery of malicious code in the node-calculator-215d package poses a significant threat to applications using it. Developers are urged to remove the package and implement secure alternatives to safeguard their applications. Regular monitoring for vulnerabilities using tools like Vulert is recommended to maintain security.

See every vulnerability recorded for node-calculator-215d →

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FAQ

node-calculator-215d is an npm package used for basic arithmetic calculations in JavaScript applications.

The malicious code was identified by Amazon Inspector, a security tool that scans for vulnerabilities in open-source packages.

Using the compromised package can lead to unauthorized access, data breaches, and potential exploitation of your application.

You can use Vulert, which monitors and alerts for open-source vulnerabilities. Visit Vulert Scanner to check your application without needing to sign up.

If no patched version is available, consider removing the package and implementing the required functionalities manually or using a secure alternative.

How To Fix

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

npm uninstall node-calculator-215d

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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