Critical Malicious Code Vulnerability in node-calculator-ad83 Package
Summary
MAL-2025-192839: Malicious code in node-calculator-ad83 (npm). Affects node-calculator-ad83 versions 2.2.0 – 9.9.9. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The node-calculator-ad83 package is a JavaScript library available on npm that provides basic arithmetic operations and calculations. It is designed to be lightweight and easy to integrate into various applications. However, recent findings have revealed that certain versions of this package contain malicious code that can compromise user data and application integrity.
Vulnerability Detail
The vulnerability stems from the inclusion of malicious code in versions 2.2.0, 2.3.0, and 9.9.9 of the node-calculator-ad83 package. This code can execute unauthorized actions, potentially leading to data theft or system compromise. The malicious code was identified through a security audit by ReversingLabs, which highlighted the risks associated with using these affected versions.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall node-calculator-ad83If 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
If immediate updating is not feasible, consider removing the package temporarily or replacing it with an alternative library that offers similar functionality without the associated risks. Additionally, you can monitor your application for vulnerabilities using tools like Vulert, which can alert you to any open-source vulnerabilities in real-time.
Conclusion
The node-calculator-ad83 package has been found to contain malicious code in specific versions, posing a significant risk to applications that utilize it. Users are strongly advised to update to the latest version or consider alternative solutions to mitigate potential threats.
See every vulnerability recorded for node-calculator-ad83 →
FAQ
It is a JavaScript library for performing basic arithmetic operations, available on npm.
Versions 2.2.0, 2.3.0, and 9.9.9 contain the malicious code.
You can use the Vulert playground at Vulert Scanner to check for vulnerabilities without requiring any signup.
Consider removing the package or using an alternative library until you can update.
The vulnerability was discovered by ReversingLabs, a security research firm.
