Critical Malicious Code Vulnerability in @lessondesk/schoolbus Package
Summary
MAL-2025-191032: Malicious code in @lessondesk/schoolbus (npm). Affects @lessondesk/schoolbus versions 5.2.2 – 5.2.3. No fix is published. How to fix ↓
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Background
The @lessondesk/schoolbus package is an npm library designed for educational applications, providing functionalities that facilitate school management and communication. However, it has been identified to contain malicious code that compromises the security of any system where it is installed, making it a significant risk for users and organizations relying on this package.
Vulnerability Detail
The vulnerability originates from the presence of embedded malicious code within the @lessondesk/schoolbus package. This code can fully compromise any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The ramifications include potential data breaches and loss of control over the affected systems, as the malicious code may persist even after the package is removed.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @lessondesk/schoolbusIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
There are no effective workarounds to mitigate the risks posed by this vulnerability other than removing the package and securing the system. Users should ensure that all sensitive information is rotated and that the system is scanned for any remaining malicious software.
Conclusion
The discovery of malicious code in the @lessondesk/schoolbus package poses a serious threat to users and organizations. Immediate action is required to remove the package and secure any compromised systems. Utilizing tools like Vulert can help monitor for such vulnerabilities in the future.
See every vulnerability recorded for @lessondesk/schoolbus →
FAQ
It is an npm library used for educational applications, facilitating school management and communication.
The malicious code can fully compromise your system, allowing unauthorized access to sensitive information and control over your computer.
Immediately remove the package and rotate all secrets and keys stored on the affected system.
Regularly monitor your dependencies for vulnerabilities using tools like Vulert, which can alert you to issues in real-time.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
