Malicious Code Detected in uuindex Package - Version 13.1.0

uuindex Updated 26 Feb 2026

Summary

25/02/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1043: Malicious code in uuindex (npm). Affects uuindex versions 13.1.0. No fix is published. How to fix ↓

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Background

The 'uuindex' package is a utility in the npm ecosystem, primarily used for indexing and managing data. It is designed to facilitate efficient data retrieval and organization. However, the package has been flagged for malicious behavior, specifically in version 13.1.0, which poses significant security risks to users and their applications.

Vulnerability Detail

The vulnerability in the 'uuindex' package arises from its ability to communicate with a domain linked to malicious activities and execute commands that are harmful. This behavior can lead to unauthorized access, data breaches, and potential exploitation of the systems utilizing this package. The origin of this vulnerability has been traced back to a malicious update that was introduced in version 13.1.0, 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 uuindex

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 'uuindex' package from their project until a secure version is confirmed. This can be done with the command: 'npm uninstall uuindex'. Additionally, users should monitor their applications for any unusual behavior that may indicate exploitation.

Conclusion

The 'uuindex' package version 13.1.0 has been identified as malicious, posing significant risks to users. It is crucial to update to a secure version or remove the package to protect your applications. Stay informed about vulnerabilities using tools like Vulert for ongoing monitoring.

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FAQ

The 'uuindex' package is used for indexing and managing data within applications, providing efficient data retrieval and organization.

You can check if your application is affected by using the Vulert playground at Vulert Scanner, which allows you to monitor and alert for open-source vulnerabilities without requiring installation.

If you cannot update the package right away, consider uninstalling it as a temporary measure and monitor your application for any suspicious activity.

Yes, the vulnerability allows the package to execute commands associated with malicious behavior, which could lead to unauthorized access and data breaches.

You can find more information about vulnerabilities in open-source packages through resources like the OpenSSF Package Analysis project and Vulert, which provides real-time monitoring for vulnerabilities.

How To Fix

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

npm uninstall uuindex

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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