Critical Malicious Code Vulnerability in web3-chain-sync Package
Summary
MAL-2026-748: Malicious code in web3-chain-sync (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The web3-chain-sync package is an npm library designed to facilitate synchronization with blockchain networks. It provides developers with tools to manage and interact with blockchain data efficiently. However, this package has been compromised, leading to severe security risks for any system utilizing it.
Vulnerability Detail
The vulnerability originates from the presence of malicious code embedded within the web3-chain-sync 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 ramifications are significant, as it poses a risk of data theft and system control by external entities. Users are advised to treat any affected system as fully compromised.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall web3-chain-syncIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
There are no effective workarounds for this vulnerability. The only recommended action is to uninstall the web3-chain-sync package and secure your system.
Conclusion
The web3-chain-sync package has been identified as containing malicious code that poses a significant security threat. Immediate action is required to remove the package and secure any affected systems. Users should remain vigilant and utilize tools like Vulert to monitor their applications for vulnerabilities.
See every vulnerability recorded for web3-chain-sync →
FAQ
Immediately uninstall the web3-chain-sync package and rotate all sensitive information stored on the affected system.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
Failing to address this vulnerability can lead to unauthorized access to sensitive data, potential data breaches, and complete control of your system by malicious actors.
Yes, Vulert can monitor and alert you in real-time for open-source vulnerabilities using just your package-lock.json file.
It is advisable to avoid using the web3-chain-sync package until a thorough security audit is conducted and a safe version is released.
