Critical Malicious Code Vulnerability in @posthog/laudspeaker-plugin: Token Theft and System Compromise
Summary
MAL-2025-191294: Malicious code in @posthog/laudspeaker-plugin (npm). Affects @posthog/laudspeaker-plugin versions 0.0.8. No fix is published. How to fix ↓
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Background
The @posthog/laudspeaker-plugin is an npm package designed to enhance the functionality of PostHog, a popular open-source product analytics platform. This plugin allows users to integrate various features seamlessly. However, it has been compromised by a malicious npm worm, which poses significant security risks to users and their systems.
Vulnerability Detail
The vulnerability originates from the Sha1-Hulud: The Second Coming NPM worm, which has infected the @posthog/laudspeaker-plugin package. This malicious code is designed to steal sensitive tokens and credentials from users, subsequently publishing them to GitHub. Additionally, the worm can propagate itself to other npm packages owned by the user and establish persistence through GitHub actions. There is also a risk that the worm may destroy the user's home directory, leading to severe data loss.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @posthog/laudspeaker-pluginIf 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 are advised to remove the @posthog/laudspeaker-plugin package until a secure version is released. This can be done using the command: npm uninstall @posthog/laudspeaker-plugin. Additionally, users should monitor their systems for any suspicious activity and change any compromised credentials immediately.
Conclusion
The @posthog/laudspeaker-plugin has been compromised by a malicious npm worm, posing significant risks to users. It is crucial to take immediate action by updating or uninstalling the package and monitoring for any suspicious activity. Utilizing tools like Vulert can help in identifying vulnerabilities in your applications.
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FAQ
The vulnerability involves malicious code that steals tokens and credentials, potentially leading to unauthorized access and data loss.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without any signup.
Immediately uninstall the @posthog/laudspeaker-plugin package and update your credentials. Monitor your systems for any unusual activity.
Users should check for the latest version of the @posthog/laudspeaker-plugin package and update it to the patched version as soon as it is released.
The consequences include unauthorized access to sensitive information, potential data loss, and the risk of further propagation of the malicious code to other packages.
