Malicious Code Detected in sheinx Package - Critical Vulnerability Alert

sheinx Updated 19 Mar 2026

Summary

18/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1842: Malicious code in sheinx (npm). Affects sheinx versions 999.0.101 – 999.0.103. No fix is published. How to fix ↓

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Background

The sheinx package is a JavaScript library available through npm, commonly used for various web development tasks. It provides functionalities that enhance application performance and user experience. However, recent findings have revealed that certain versions of this package contain malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The vulnerability in the sheinx package arises from the inclusion of malicious code that can compromise the integrity of applications using this library. This code can lead to unauthorized access, data breaches, and potential exploitation of the affected systems. The malicious code was identified in versions 999.0.101, 999.0.102, and 999.0.103, which were sourced from a repository flagged by ReversingLabs. Users of these versions are at risk and should take immediate action to mitigate potential threats.

How To Fix

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

npm uninstall sheinx

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

If immediate updating is not feasible, consider removing the sheinx package from your project until a secure version is confirmed. You can do this by executing the command: npm uninstall sheinx. This will prevent the execution of any malicious code associated with the package.

Conclusion

The discovery of malicious code in the sheinx package highlights the importance of maintaining updated dependencies in software development. Users of the affected versions must take immediate action to update or remove the package to safeguard their applications from potential threats. Utilizing tools like Vulert can further enhance security by providing real-time monitoring for vulnerabilities.

See every vulnerability recorded for sheinx →

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FAQ

Sheinx is a JavaScript library available on npm, designed to enhance web application performance and functionality.

You can check if your application is affected by using Vulert, which monitors vulnerabilities in your package-lock.json file. Visit Vulert Scanner to use the Vulert playground without signup.

If you are using versions 999.0.101, 999.0.102, or 999.0.103 of the sheinx package, you should update to the latest version immediately to mitigate risks.

Using the affected versions of the sheinx package can lead to unauthorized access, data breaches, and exploitation of your application.

Yes, you can use Vulert, which allows you to monitor and receive alerts for open-source vulnerabilities in your software by analyzing your package-lock.json.

How To Fix

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

npm uninstall sheinx

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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