Critical Malicious Code Vulnerability in web3rpcs Package

web3rpcs Updated 02 Oct 2025

Summary

17/09/2025
CRITICAL
No i
Critical
Not published

MAL-2025-47418: Malicious code in web3rpcs (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The web3rpcs package is an npm library designed to facilitate interactions with Ethereum-based blockchain networks through JSON-RPC. It provides developers with tools to send requests and receive responses from Ethereum nodes, making it easier to build decentralized applications. However, this package has been identified to contain malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The vulnerability in the web3rpcs package stems from the inclusion of malicious code that can compromise the integrity and security of applications using this library. This code could potentially allow unauthorized access to sensitive data, execute arbitrary commands, or disrupt application functionality. The issue was introduced in version 0 and affects all subsequent versions, making it critical for users to take immediate action to mitigate risks.

How To Fix

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

npm uninstall web3rpcs

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, consider removing the web3rpcs package from your project until a secure version is released. You can do this by running: 'npm uninstall web3rpcs'. Additionally, explore alternative libraries that provide similar functionality without the associated risks.

Conclusion

The web3rpcs package has been identified as containing malicious code that poses significant security risks. It is crucial for developers using this package to take immediate action by updating to a secure version or removing the package altogether. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.

See every vulnerability recorded for web3rpcs →

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FAQ

The malicious code can compromise application security, potentially allowing unauthorized access and data manipulation.

You can use Vulert, which monitors open-source vulnerabilities in real-time. Simply upload your package-lock.json file to receive alerts about vulnerabilities.

Yes, you can temporarily uninstall the web3rpcs package and look for alternative libraries that do not have this vulnerability.

Immediately remove the package and assess your application for any potential security breaches. Consider using Vulert to monitor for vulnerabilities.

Detailed information about the vulnerability can be found in the official GitHub repository of the malicious packages.

Related vulnerabilities

Recent vulnerabilities recorded for web3rpcs.

How To Fix

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

npm uninstall web3rpcs

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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