Critical Malicious Code Vulnerability in plugin-react-swc Package

plugin-react-swc Updated 21 Jan 2026

Summary

21/01/2026
CRITICAL
No i
Critical
Not published

MAL-2026-424: Malicious code in plugin-react-swc (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The plugin-react-swc package is a tool designed for integrating React with the SWC (Speedy Web Compiler) ecosystem, enhancing performance and efficiency in JavaScript applications. However, this package has been compromised, leading to severe security risks for any system utilizing it. The malicious code embedded within this package can lead to unauthorized access and control over affected systems.

Vulnerability Detail

The vulnerability originates from the presence of malicious code within the plugin-react-swc package. This code can fully compromise any computer that has the package installed or running, allowing attackers to access sensitive information, including secrets and keys. The ramifications of this vulnerability are severe, as it may lead to data breaches and unauthorized control over the affected systems. Users are advised to treat any system with this package as compromised.

How To Fix

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

npm uninstall plugin-react-swc

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

There are no effective workarounds for this vulnerability. The only recommended action is to uninstall the compromised package to prevent further risks.

Conclusion

The plugin-react-swc package has been identified as containing malicious code, posing significant risks to any system using it. Immediate action is required to uninstall the package and secure any sensitive information. Regular monitoring of open-source dependencies is crucial to maintain security.

See every vulnerability recorded for plugin-react-swc →

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FAQ

You should uninstall the plugin-react-swc package immediately and rotate any secrets or keys stored on the affected system.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without requiring any signup.

Failure to address this vulnerability can lead to unauthorized access to sensitive information and complete control over your system by malicious actors.

While removing the package is essential, there is no guarantee that all malicious software will be removed. It is advisable to perform a thorough security audit and potentially reinstall the operating system.

Yes, but you should ensure that other packages are not compromised. Regularly monitor your dependencies for vulnerabilities using tools like Vulert.

How To Fix

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

npm uninstall plugin-react-swc

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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