Critical Malicious Code Vulnerability in @posthog/rrdom Package
Summary
MAL-2025-190672: Malicious code in @posthog/rrdom (npm). Affects @posthog/rrdom versions 0.0.31. No fix is published. How to fix ↓
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Background
The @posthog/rrdom package is a JavaScript library used within the npm ecosystem, primarily designed for enhancing user experience and analytics in web applications. It offers features that allow developers to track user interactions and behaviors effectively. However, this package has been identified as containing malicious code, posing significant security risks to any system that has it installed.
Vulnerability Detail
The vulnerability originates from the presence of embedded malicious code within the @posthog/rrdom package, specifically version 0.0.31. This code can compromise any computer that has the package installed, potentially allowing unauthorized access to sensitive information such as secrets and keys. The ramifications of this vulnerability are severe, as it may lead to full control of the affected system by an outside entity, making it crucial for users to take immediate action.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @posthog/rrdomIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a workaround, ensure that you do not run any applications that depend on the @posthog/rrdom package until it has been completely removed and all sensitive information has been secured.
Conclusion
The @posthog/rrdom package has been identified as containing malicious code, posing a significant security threat to any system that has it installed. Immediate action is required to remove the package and secure any sensitive information. Users should remain vigilant and consider using tools like Vulert to monitor their applications for vulnerabilities.
See every vulnerability recorded for @posthog/rrdom →
FAQ
The @posthog/rrdom package is a JavaScript library used for tracking user interactions and enhancing analytics in web applications.
The malicious code can compromise your system, allowing unauthorized access to sensitive information and potentially giving control to an outside entity.
You should immediately uninstall the package and rotate any secrets or keys stored on the affected system.
Currently, there is no patched version available for the @posthog/rrdom package.
You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities using just your package-lock.json file. You can also check if your application is affected by this vulnerability using the Vulert playground without any signup.
