Malicious Code Detected in docusaurus-transform-achernar-cosmos Package

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-18583: Malicious code in docusaurus-transform-achernar-cosmos (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The docusaurus-transform-achernar-cosmos package is a tool designed for transforming content in Docusaurus, a popular static site generator. It allows developers to create and manage documentation websites efficiently. However, this package has been found to contain malicious code, posing a significant risk to users who integrate it into their projects.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the docusaurus-transform-achernar-cosmos package. This code can potentially compromise the security of applications that utilize this package, leading to unauthorized access, data breaches, or other harmful actions. The malicious nature of the code was identified by security researchers, highlighting the importance of scrutinizing third-party packages before integration.

How To Fix

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

npm uninstall docusaurus-transform-achernar-cosmos

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

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Workaround

As a temporary workaround, consider using alternative packages that provide similar functionality without the associated risks. Additionally, you can monitor your project's dependencies using tools like Vulert, which can alert you to vulnerabilities in real-time.

Conclusion

The discovery of malicious code in the docusaurus-transform-achernar-cosmos package underscores the importance of vigilance when using third-party libraries. Users are advised to remove the package and consider alternatives while keeping an eye on updates from the package maintainers.

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FAQ

It is a package used for transforming content in Docusaurus, a static site generator for documentation.

The malicious code was identified by security researchers from Amazon Inspector, who reported the findings.

Using this package can lead to security vulnerabilities, including unauthorized access and potential data breaches.

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

Remove the package from your project immediately and monitor for any updates or patches that may address the vulnerability.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

How To Fix

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

npm uninstall docusaurus-transform-achernar-cosmos

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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