Malicious Code Detected in chikusho Package - Security Alert

chikusho Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-16978: Malicious code in chikusho (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The chikusho package is an npm library designed for [insert functionality here, e.g., data processing, web scraping, etc.]. It is widely used in various applications due to its [insert key attributes, e.g., ease of use, performance, etc.]. However, recent findings have revealed that this package contains malicious code, posing significant security risks to users and their applications.

Vulnerability Detail

The vulnerability in the chikusho package originates from the inclusion of malicious code that can compromise the integrity of applications utilizing this package. This code may lead to unauthorized access, data breaches, or other harmful actions that can affect both developers and end-users. The malicious nature of this vulnerability makes it critical for users to address it immediately.

How To Fix

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

npm uninstall chikusho

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

Conclusion

The discovery of malicious code in the chikusho package highlights the importance of maintaining security in open-source software. Users are urged to take immediate action by updating or removing the package to safeguard their applications. Continuous monitoring for vulnerabilities is essential to ensure ongoing security.

See every vulnerability recorded for chikusho →

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FAQ

Chikusho is an npm package used for [insert functionality]. It is popular among developers for its [insert key attributes].

The malicious code was identified through security audits and reports from security tools like Amazon Inspector.

Using the compromised package can lead to unauthorized access to sensitive data, data breaches, and potential exploitation of your application.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file. Visit https://vulert.com for more information.

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

How To Fix

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

npm uninstall chikusho

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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