Critical Security Breach in @posthog/netdata-event-processing: Malicious Code Injection
Summary
MAL-2025-191297: Malicious code in @posthog/netdata-event-processing (npm). Affects @posthog/netdata-event-processing versions 0.0.8. No fix is published. How to fix ↓
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Background
The @posthog/netdata-event-processing package is a tool used within the PostHog analytics framework to process event data. It is designed to facilitate the collection and analysis of user interactions, providing insights into user behavior. However, this package has been compromised, making it susceptible to severe security threats.
Vulnerability Detail
The vulnerability stems from a malicious code injection introduced by the Sha1-Hulud: The Second Coming NPM worm. This worm is capable of stealing sensitive tokens and credentials from users, subsequently publishing this information to GitHub. Additionally, it can propagate itself to other NPM packages owned by the user, establishing persistence through GitHub actions. The malicious payload poses a risk of destroying the user's home directory, leading to potential data loss and security breaches.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @posthog/netdata-event-processingIf 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/netdata-event-processing package from their project until a secure version is available. This can be done using the command: npm uninstall @posthog/netdata-event-processing. Additionally, users should monitor their GitHub repositories for any unauthorized changes or actions.
Conclusion
The @posthog/netdata-event-processing package has been compromised by a malicious NPM worm, posing significant security risks to users. Immediate action is required to update the package and mitigate potential damage. Utilizing tools like Vulert can aid in monitoring and managing vulnerabilities effectively.
See every vulnerability recorded for @posthog/netdata-event-processing →
FAQ
The malicious code is designed to steal tokens and credentials, which can lead to unauthorized access to user accounts and data.
You can check if your application is affected by using Vulert, which monitors open-source vulnerabilities in real-time. Visit Vulert Scanner to analyze your package-lock.json without any signup.
If you suspect that your credentials have been compromised, immediately change your passwords and revoke any tokens that may have been exposed.
Regularly updating your dependencies, using tools like Vulert for monitoring, and conducting security audits can help prevent future vulnerabilities.
Detailed information can be found in the official GitHub repository and security advisories related to the @posthog/netdata-event-processing package.
