Critical Malicious Code Vulnerability in babel-pal Package

babel-pal Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-15289: Malicious code in babel-pal (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The babel-pal package is a JavaScript library commonly used in Node.js applications to facilitate the integration of Babel, a popular JavaScript compiler. It allows developers to use the latest JavaScript features while maintaining compatibility with older environments. However, this package has been identified to contain malicious code, posing significant risks to applications that rely on it.

Vulnerability Detail

The vulnerability in the babel-pal package originates from the inclusion of malicious code that can compromise the security of applications using this library. This code may allow unauthorized access to sensitive data, execute arbitrary commands, or lead to further exploitation of the system. The issue is particularly concerning as it affects all versions starting from the initial release, making it imperative for users to take immediate action.

How To Fix

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

npm uninstall babel-pal

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, users can remove the babel-pal package from their project until a secure version is released. This can be done using the following command: npm uninstall babel-pal. Alternatively, consider using a different package that offers similar functionality without the associated risks.

Conclusion

The discovery of malicious code in the babel-pal package highlights the importance of maintaining vigilance in open-source software dependencies. Users are urged to update their packages promptly and consider using tools like Vulert to monitor for vulnerabilities in real-time.

See every vulnerability recorded for babel-pal →

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FAQ

The babel-pal package is used to integrate Babel into Node.js applications, allowing developers to utilize modern JavaScript features.

The malicious code can potentially allow unauthorized access to sensitive data and execute arbitrary commands, posing a significant security risk.

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

Users should check the package repository for a patched version of babel-pal and update to that version as soon as it is available.

As a temporary measure, you can uninstall the babel-pal package or switch to an alternative package until a secure version is released.

How To Fix

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

npm uninstall babel-pal

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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