Critical Malicious Code Vulnerability in @posthog/postgres-plugin: Token Theft and Home Directory Destruction
Summary
MAL-2025-191298: Malicious code in @posthog/postgres-plugin (npm). Affects @posthog/postgres-plugin versions 0.0.8. No fix is published. How to fix ↓
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Background
The @posthog/postgres-plugin is an npm package designed to facilitate integration with PostgreSQL databases for analytics and data tracking. It is widely used in applications that require robust data handling and reporting capabilities. However, this package has been compromised, making it vulnerable to severe security threats that can affect users' credentials and system integrity.
Vulnerability Detail
The vulnerability stems from a malicious code injection by the Sha1-Hulud: The Second Coming NPM worm. This worm is designed to steal sensitive tokens and credentials from users and publish them to GitHub. Furthermore, it can propagate itself to other npm packages owned by the user, establishing persistence through GitHub actions. The malicious payload poses a significant risk as it may also lead to the destruction of the user's home directory, resulting in data loss and system compromise.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @posthog/postgres-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/postgres-plugin package from their project until a secure version is confirmed. This can be done using the command: npm uninstall @posthog/postgres-plugin. Additionally, monitor your system for any unauthorized access or changes.
Conclusion
The @posthog/postgres-plugin has been compromised by a malicious worm that poses serious security threats, including token theft and potential data loss. Immediate action is required to update or remove the affected package to protect your system and data.
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FAQ
The malicious code is designed to steal tokens and credentials, publish them to GitHub, and potentially destroy the user's home directory.
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If you have installed the compromised version, immediately uninstall the package and update to the latest secure version.
Yes, the malicious payload may lead to the destruction of the user's home directory, resulting in potential data loss.
The worm can propagate itself to other npm packages owned by the user and establish persistence through GitHub actions.
