Critical Malicious Code Vulnerability in react-hook-form-js Package

react-hook-form-js Updated 12 Jan 2026

Summary

12/01/2026
CRITICAL
No i
Critical
Not published

MAL-2026-232: Malicious code in react-hook-form-js (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The react-hook-form-js package is a popular library in the npm ecosystem that simplifies form handling in React applications. It provides developers with a set of hooks to manage form state and validation efficiently. However, this package has been compromised, leading to severe security implications for any application utilizing it.

Vulnerability Detail

The vulnerability stems from the presence of malicious code embedded within the react-hook-form-js 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 malicious nature of the code is classified under CWE-506, indicating that it contains embedded malicious code. 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 react-hook-form-js

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 other than removing the package entirely. Users should ensure that they do not rely on react-hook-form-js for form handling until a secure version is released.

Conclusion

The react-hook-form-js package has been identified as containing malicious code that poses a significant security risk. Users must take immediate action to remove the package and secure their systems. Regular monitoring for updates and vulnerabilities is essential to maintain application security.

See every vulnerability recorded for react-hook-form-js →

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FAQ

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. Check your application using the Vulert playground at Vulert Scanner.

As of now, there is no patched version available. Users should remove the package until a secure version is released.

Failing to address this vulnerability can lead to unauthorized access to sensitive data and complete compromise of the affected system.

It is recommended to avoid using react-hook-form-js until a secure version is released. Consider alternative libraries for form handling in the meantime.

How To Fix

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

npm uninstall react-hook-form-js

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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