Malicious Code Injection in capacitor-notificationhandler: A Critical Vulnerability
Summary
MAL-2025-47394: Malicious code in capacitor-notificationhandler (npm). Affects capacitor-notificationhandler versions 0.0.2 – 0.0.3. No fix is published. How to fix ↓
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Background
The capacitor-notificationhandler package is an npm library designed to facilitate the handling of notifications in applications built with Capacitor. It provides developers with an easy way to manage notifications across different platforms. However, this package has been compromised, leading to the introduction of malicious code that poses significant security risks to users and their applications.
Vulnerability Detail
The vulnerability stems from a compromise of the capacitor-notificationhandler package, specifically versions 0.0.2 and 0.0.3. The malicious code, introduced by the Shai-Hulud NPM worm, is designed to steal tokens and credentials from users' applications. This stolen data is then published to GitHub, and the worm propagates itself to other NPM packages owned by the affected user. The implications of this vulnerability are severe, as it can lead to unauthorized access to sensitive information and further compromise of the user's software ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall capacitor-notificationhandlerIf 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 remove the compromised package from your project until a secure version is available. You can do this by running the following command: npm uninstall capacitor-notificationhandler. Additionally, consider using alternative notification handling libraries that are not affected by this vulnerability.
Conclusion
The capacitor-notificationhandler package has been compromised, leading to a significant security vulnerability that can expose sensitive user data. It is crucial for developers to update to a secure version of the package and consider alternative solutions while monitoring their applications for any signs of compromise.
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FAQ
It is an npm library used for managing notifications in applications built with Capacitor.
The package was compromised by the Shai-Hulud NPM worm, which injected malicious code into specific versions.
The malicious code is designed to steal tokens and credentials from users' applications.
You can use the Vulert playground at Vulert Scanner to check if your application is affected without needing to sign up.
As a temporary measure, consider uninstalling the compromised package and using alternative libraries until a secure version is available.
