Critical Malicious Code Vulnerability in transform-es2015-parameters Package

transform-es2015-parameters Updated 18 Mar 2026

Summary

18/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1562: Malicious code in transform-es2015-parameters (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The transform-es2015-parameters package is an npm module that allows developers to transform ES2015 parameter syntax in JavaScript code. It is commonly used in modern web development to ensure compatibility with older JavaScript environments. However, this package has been compromised, leading to significant security concerns for any application that utilizes it.

Vulnerability Detail

The vulnerability originates from malicious code embedded within the transform-es2015-parameters package. This code can fully compromise any computer where the package is installed, allowing unauthorized access to sensitive information such as secrets and keys. The ramifications of this vulnerability are severe, as it can lead to data breaches and loss of control over the affected systems. It is classified under CWE-506, indicating that the product contains code that appears to be malicious in nature.

How To Fix

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

npm uninstall transform-es2015-parameters

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

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Workaround

As a workaround, you can temporarily avoid using the transform-es2015-parameters package by replacing it with alternative packages that provide similar functionality. Ensure to review the alternatives for any known vulnerabilities before implementation.

Conclusion

The transform-es2015-parameters package has been compromised with malicious code, posing a serious threat to any systems using it. Immediate action is required to remove the package and secure sensitive information. Utilize tools like Vulert to monitor for vulnerabilities in your applications.

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FAQ

You should immediately remove the package and rotate any sensitive information stored on the affected system.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without needing to sign up.

Currently, there is no patched version available for the transform-es2015-parameters package. The best course of action is to remove it entirely.

Failing to address this vulnerability can lead to unauthorized access to sensitive data, potential data breaches, and loss of control over your systems.

No, it is highly recommended to remove the package as it is compromised and poses a significant security risk.

How To Fix

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

npm uninstall transform-es2015-parameters

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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