Malicious Code Detected in mw-frontend-utils Package

mw-frontend-utils Updated 23 Dec 2025

Summary

22/12/2025
CRITICAL
No i
Critical
Not published

MAL-2025-192697: Malicious code in mw-frontend-utils (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The mw-frontend-utils package is a utility library designed for frontend development in JavaScript applications, particularly those using the npm ecosystem. It provides various functions and tools that enhance the development process. However, it has been identified to contain malicious code, posing a significant security risk to applications that utilize it.

Vulnerability Detail

The vulnerability in the mw-frontend-utils package stems from the presence of malicious code that can compromise the integrity and security of applications using this package. This issue was identified by Amazon Inspector, which reported that the package contains code that could potentially lead to unauthorized access or data breaches. The malicious code was introduced in all versions starting from 0, making it imperative 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 mw-frontend-utils

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, users can remove the mw-frontend-utils package from their project until a secure version is released. This can be done using the command: npm uninstall mw-frontend-utils. Additionally, consider using alternative packages that provide similar functionality without the associated risks.

Conclusion

The mw-frontend-utils package has been found to contain malicious code, posing a serious threat to applications that utilize it. Users are strongly advised to update or remove the package to safeguard their applications. Regular monitoring for vulnerabilities using tools like Vulert can help maintain security in open-source projects.

See every vulnerability recorded for mw-frontend-utils →

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FAQ

mw-frontend-utils is a utility library for frontend development in JavaScript applications, offering various tools to enhance the development process.

The malicious code was detected by Amazon Inspector, which analyzes packages for security vulnerabilities.

Using the compromised package can lead to unauthorized access, data breaches, and potential exploitation of the application.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without any signup.

If immediate updates are not possible, consider removing the package temporarily and using alternative libraries until a secure version is available.

How To Fix

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

npm uninstall mw-frontend-utils

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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