Malicious Code Detected in Protolab Package (npm) - Version 1.0.0

protolab Updated 02 Oct 2025

Summary

18/07/2025
CRITICAL
No i
Critical
Not published

MAL-2025-6009: Malicious code in protolab (npm). Affects protolab versions 1.0.0. No fix is published. How to fix ↓

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Background

Protolab is an npm package designed for various functionalities within JavaScript applications. It is utilized by developers for its ease of integration and utility. However, the package has been flagged for malicious activity, specifically in version 1.0.0, which poses significant security risks to applications relying on it.

Vulnerability Detail

The vulnerability in the Protolab package arises from its communication with a domain linked to malicious activities. This behavior can lead to data breaches, unauthorized access, and potential exploitation of the systems using this package. The malicious nature of the package was identified by the OpenSSF Package Analysis project, which highlighted the risks associated with using this specific version.

How To Fix

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

npm uninstall protolab

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 measure, you can avoid using the Protolab package altogether until a secure version is confirmed. If you must use it, consider implementing network security measures to monitor and restrict communications to potentially harmful domains.

Conclusion

The Protolab package version 1.0.0 has been identified as malicious, posing significant risks to applications. It is essential to remove this version and update to a secure alternative. Regular monitoring and security practices should be employed to safeguard against such vulnerabilities.

See every vulnerability recorded for protolab →

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FAQ

Protolab is an npm package used in JavaScript applications for various functionalities, but it has been flagged for malicious behavior.

The vulnerability was identified by the OpenSSF Package Analysis project, which flagged version 1.0.0 for communicating with a malicious domain.

Using the affected version can lead to data breaches, unauthorized access, and exploitation of your application.

You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

If immediate updates are not possible, consider implementing network security measures to monitor and restrict communications from the package.

How To Fix

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

npm uninstall protolab

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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