Critical Malicious Code Vulnerability in calc-loan-interest Package
Summary
MAL-2025-190834: Malicious code in calc-loan-interest (npm). Affects calc-loan-interest versions 1.0.4. 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 calc-loan-interest package is an npm library designed to assist developers in calculating loan interest rates and payments. It is commonly used in financial applications for its simplicity and ease of integration. However, this package has been compromised, leading to severe security risks for any system utilizing it.
Vulnerability Detail
The vulnerability stems from the presence of malicious code embedded within the calc-loan-interest package. This code can fully compromise any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The malicious nature of this code has been confirmed by security researchers, and it poses a significant threat to users and their data.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall calc-loan-interestIf 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 workaround, consider using alternative packages that provide similar functionality without the associated risks. Always ensure to review the security status of any package before installation.
Conclusion
The calc-loan-interest package has been identified as containing malicious code that poses a serious security threat. Users are advised to uninstall the package immediately and take necessary precautions to secure their systems. Utilizing tools like Vulert can help in monitoring and managing open-source vulnerabilities effectively.
See every vulnerability recorded for calc-loan-interest →
FAQ
Immediately uninstall the package and rotate any sensitive information stored on the affected system.
You can use Vulert's playground at Vulert Scanner to check for vulnerabilities in your application without any signup.
Currently, there is no patched version available for the calc-loan-interest package.
Using compromised packages can lead to unauthorized access to sensitive data, system control by malicious actors, and potential data breaches.
Regularly monitor your dependencies for vulnerabilities using tools like Vulert, and always review the security status of packages before installation.
