Critical Malicious Code Vulnerability in test-hardhat-app Package
Summary
MAL-2025-190784: Malicious code in test-hardhat-app (npm). Affects test-hardhat-app versions 1.0.1 – 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 test-hardhat-app package is an npm module designed for testing applications built with Hardhat, a popular Ethereum development framework. It provides developers with tools to streamline their testing processes. However, this package has been compromised, embedding malicious code that poses significant security risks to any system where it is installed.
Vulnerability Detail
The vulnerability stems from the presence of embedded malicious code within the test-hardhat-app package. This code can fully compromise any computer that has the package installed or running, allowing unauthorized access to sensitive information such as secrets and keys. The malicious code was identified through the GHSA-malware source, indicating a severe threat to users who have installed versions 1.0.1 to 1.0.4 of this package.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall test-hardhat-appIf 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, if you need to continue testing your application, consider using alternative testing packages that do not have known vulnerabilities. Always ensure to check for the latest security updates and reviews before installing any package.
Conclusion
The test-hardhat-app package has been compromised with malicious code, posing a significant risk to users. Immediate action is required to uninstall the package and secure any sensitive information. Utilizing tools like Vulert can help in monitoring for such vulnerabilities in the future.
See every vulnerability recorded for test-hardhat-app →
FAQ
Immediately uninstall the package and rotate any secrets or keys that may have been compromised.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit the Vulert playground at Vulert Scanner to check if your application is affected without needing to sign up.
No, there is currently no patched version of the test-hardhat-app package available.
Failure to address this vulnerability can lead to unauthorized access to sensitive data, potential data breaches, and full control of your system by malicious actors.
Regularly monitor your dependencies for vulnerabilities, use trusted sources for packages, and consider using tools like Vulert for real-time alerts.
