Malicious Code Vulnerability in @siriusbeyond/ui: Credential Exfiltration Risk
Summary
MAL-2026-16321: Malicious code in @siriusbeyond/ui (npm). Affects @siriusbeyond/ui versions 99.0.0. No fix is published. How to fix ↓
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Background
The @siriusbeyond/ui package is an npm library designed for user interface components. It is utilized in various web applications to enhance user experience. However, this package has been identified to contain malicious code that executes during the installation process, posing a significant security risk to users and their environments.
Vulnerability Detail
The vulnerability originates from the execution of lifecycle hooks (preinstall and postinstall) that run a script (callback.js) collecting sensitive information from the host machine. This includes the hostname, username, platform, and environment variables that may contain credentials. The collected data is then sent to an attacker-controlled Telegram channel using a hardcoded bot token. This behavior is concealed by redirecting error messages to /dev/null, making it difficult for users to detect the malicious activity during installation.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @siriusbeyond/uiIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, you can avoid using the @siriusbeyond/ui package until a secure version is released. Additionally, consider using a package manager that allows you to lock dependencies and monitor for vulnerabilities, such as npm audit.
Conclusion
The @siriusbeyond/ui package contains a serious vulnerability that can lead to credential exfiltration. Users are advised to update to a patched version as soon as it becomes available and to monitor their applications for any signs of compromise. Utilizing tools like Vulert can help in maintaining the security of your software.
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FAQ
The malicious code collects sensitive information from the host machine and sends it to an attacker-controlled Telegram channel.
You can use Vulert, which monitors open-source vulnerabilities in your software. By analyzing your package-lock.json file, Vulert can alert you in real-time. You can also check your application using the Vulert playground without signing up.
If you have installed the @siriusbeyond/ui package, it is recommended to remove it immediately and update to a secure version if available.
The malicious code is executed through npm lifecycle hooks (preinstall and postinstall) that run automatically when the package is installed.
To prevent similar vulnerabilities, regularly audit your dependencies, use trusted sources for packages, and consider employing tools like Vulert for real-time monitoring.
