Critical Security Breach in @oku-ui/arrow: Malicious Code Detected

@oku-ui/arrow Updated 25 Nov 2025

Summary

25/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-191249: Malicious code in @oku-ui/arrow (npm). Affects @oku-ui/arrow versions 0.6.2. No fix is published. How to fix ↓

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Background

The @oku-ui/arrow package is a component of the Oku UI library, designed to provide developers with reusable UI components for building web applications. It is widely used in the JavaScript ecosystem, particularly within projects that utilize npm for package management. However, this package has recently been compromised, exposing users to severe security risks.

Vulnerability Detail

The vulnerability originates from a malicious NPM worm known as Sha1-Hulud: The Second Coming. This worm embeds itself within the @oku-ui/arrow package, enabling it to steal sensitive tokens and credentials from users. The stolen data is then published to GitHub, potentially leading to unauthorized access to user accounts and repositories. Additionally, the worm can propagate to other NPM packages owned by the user and establish persistence through GitHub actions. There is also a risk that it may destroy the user's home directory, causing significant data loss.

How To Fix

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

npm uninstall @oku-ui/arrow

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 @oku-ui/arrow package from their project until a secure version is confirmed. Use the following command to uninstall the package: npm uninstall @oku-ui/arrow. Additionally, review your project for any other potentially compromised packages.

Conclusion

The @oku-ui/arrow package has been compromised by a malicious NPM worm, posing significant security risks to users. It is crucial to update to the latest version and monitor your projects for vulnerabilities to ensure the safety of your applications.

See every vulnerability recorded for @oku-ui/arrow →

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FAQ

Immediately uninstall the package and update to the latest secure version. Review your project for any signs of unauthorized access.

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

Failing to address this vulnerability can lead to unauthorized access to your accounts, data theft, and potential loss of important files.

Yes, you can use Vulert, which monitors and alerts you in real-time for open-source vulnerabilities using just your package-lock.json.

You can find more information on the package's official repository on GitHub or its documentation site.

How To Fix

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

npm uninstall @oku-ui/arrow

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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