Critical Malicious Code Vulnerability in @vietmoney/react-big-calendar Package

Summary

31/12/2025
CRITICAL
No i
Critical
Not published

MAL-2025-192994: Malicious code in @vietmoney/react-big-calendar (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The @vietmoney/react-big-calendar package is a popular npm library used for creating interactive and customizable calendar components in React applications. It provides features such as event management, date navigation, and various display options, making it a valuable tool for developers. However, this package has been identified to contain malicious code, posing significant security risks to any application that utilizes it.

Vulnerability Detail

The vulnerability originates from the presence of embedded malicious code within the @vietmoney/react-big-calendar package. This code can compromise any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The ramifications of this vulnerability are severe, as it can lead to complete control of the affected system by an outside entity. Users are advised to treat any system with this package as fully compromised.

How To Fix

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

npm uninstall @vietmoney/react-big-calendar

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

Currently, there are no effective workarounds to mitigate the risks associated with this vulnerability other than removing the package and securing your system.

Conclusion

The discovery of malicious code within the @vietmoney/react-big-calendar package poses a serious threat to users and their systems. Immediate action is required to mitigate risks, including removing the package and securing sensitive information. Continuous monitoring and utilizing tools like Vulert can help maintain the security of your applications.

See every vulnerability recorded for @vietmoney/react-big-calendar →

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FAQ

You should immediately remove the package from your project and rotate any sensitive information stored on the affected system.

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.

While removing the package is essential, there is no guarantee that all malicious software will be eliminated. It is advisable to secure your system and rotate all sensitive credentials.

If a patched version is released, updating the package will help. However, it is crucial to remove the package first and ensure your system is secure.

Failing to address this vulnerability can lead to unauthorized access to your system, data breaches, and potential exploitation of sensitive information.

How To Fix

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

npm uninstall @vietmoney/react-big-calendar

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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