Malicious Code Detected in calcom-monorepo: A Critical Security Alert
Summary
MAL-2025-16444: Malicious code in calcom-monorepo (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The calcom-monorepo package is a popular npm library used for building and managing applications within the Cal.com ecosystem. It provides essential functionalities for developers, enabling them to streamline their workflow and enhance productivity. However, recent findings have revealed that this package contains malicious code, posing significant security risks to users and their applications.
Vulnerability Detail
The vulnerability in the calcom-monorepo package stems from the inclusion of malicious code, which can compromise the integrity of applications that depend on it. This malicious code can lead to unauthorized access, data breaches, or even complete system takeover. The issue was introduced in version 0 and affects all subsequent versions. Users of this package are at risk of exploitation if they do not take immediate action to mitigate the threat.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall calcom-monorepoIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, users can remove the calcom-monorepo package from their project until a secure version is released. This can be done by executing the following command: npm uninstall calcom-monorepo. Additionally, consider using alternative packages that provide similar functionalities without the associated risks.
Conclusion
The discovery of malicious code in the calcom-monorepo package highlights the importance of maintaining vigilance in software dependencies. Users are urged to take immediate action to protect their applications by updating or removing the affected package. Utilizing tools like Vulert can help monitor for vulnerabilities in real-time.
See every vulnerability recorded for calcom-monorepo →
FAQ
The calcom-monorepo package is an npm library designed for building and managing applications within the Cal.com ecosystem.
The malicious code can lead to unauthorized access and potential data breaches, compromising the security of applications using this package.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Check your application using the Vulert playground at Vulert Scanner.
As of now, a patched version is not available. Users should monitor the official repository for updates and apply them as soon as they are released.
If you cannot update the package, consider uninstalling it and using alternative packages until a secure version is available.
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Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
