Malicious Code Vulnerability in workalender Package
Summary
MAL-2026-18096: Malicious code in workalender (PyPI). Affects workalender versions 17.1.0.dev0. No fix is published. How to fix ↓
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Background
The workalender package, available on PyPI, is designed for managing and organizing tasks and events. It is intended to provide users with a simple interface to schedule their work effectively. However, this package has been found to contain malicious code that compromises user data and system integrity, making it a significant security concern.
Vulnerability Detail
The vulnerability originates from the package's code, which exfiltrates basic information about the host system, such as the IP address and username, upon installation or import. This malicious behavior is executed by overriding the install command in the setup.py file, allowing the code to run during the installation process. The risk is categorized as limited, but it poses a serious threat to user privacy and system security.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
pip uninstall workalenderIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, avoid installing the workalender package until a secure version is released. If you have already installed it, consider removing it from your environment and using alternative task management tools that do not have known vulnerabilities.
Conclusion
The workalender package has been identified as containing malicious code that compromises user data and system security. Users are advised to uninstall the package and monitor for updates regarding a secure version. Utilizing tools like Vulert can help in identifying vulnerabilities in your applications.
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FAQ
The workalender package is a Python library designed for task and event management, allowing users to schedule and organize their work effectively.
The vulnerability allows the package to exfiltrate sensitive information from the host system, such as the IP address and username, during installation.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check if your application is affected without needing to sign up.
As of now, a patched version has not been specified. It is crucial to monitor the package repository for updates and security patches.
If you have installed the workalender package, it is recommended to uninstall it immediately and refrain from using it until a secure version is released.
References
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