Critical Malicious Code Vulnerability in add-react-displayname Package

add-react-displayname Updated 18 Mar 2026

Summary

18/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1557: Malicious code in add-react-displayname (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The add-react-displayname package is an npm library designed to enhance React components by automatically adding display names to them. This functionality aids in debugging and improves the readability of React applications. However, the package has been compromised, leading to significant security concerns for any application that utilizes it.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the add-react-displayname 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 this code is classified under CWE-506, indicating that it contains embedded malicious code. Users are advised to treat any system with this package as potentially compromised.

How To Fix

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

npm uninstall add-react-displayname

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

Currently, there are no workarounds to mitigate the risks associated with this malicious package. The only effective measure is to uninstall the package entirely.

Conclusion

The add-react-displayname package has been identified as containing malicious code, posing severe security risks to any system using it. Immediate action is required to uninstall the package and secure any potentially compromised information. Regular monitoring and using tools like Vulert can help maintain the security of your applications.

See every vulnerability recorded for add-react-displayname →

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FAQ

Immediately uninstall the package using 'npm uninstall add-react-displayname' and rotate any sensitive information that may have been compromised.

You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without needing to sign up.

Keeping the add-react-displayname package installed poses a significant risk as it can allow unauthorized access to your system and sensitive data.

If you suspect a compromise, it is essential to rotate all secrets and keys stored on the affected system and conduct a thorough security audit.

Yes, consider using other libraries that provide similar functionality without the associated risks. Always ensure to review the security of any package before installation.

How To Fix

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

npm uninstall add-react-displayname

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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