Critical Malicious Code Vulnerability in bonvalsyn Package
Summary
MAL-2025-15954: Malicious code in bonvalsyn (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The bonvalsyn package is an npm library designed for specific functionalities within JavaScript applications. It is utilized by developers for its ease of integration and various features. However, it has been identified to contain malicious code that poses significant security risks to applications relying on it.
Vulnerability Detail
The vulnerability in the bonvalsyn package originates from the inclusion of malicious code that can compromise the integrity of applications using this package. This malicious code can lead to unauthorized access, data breaches, and potential exploitation of user data. The issue affects all versions starting from 0, making it critical for users to address it immediately.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall bonvalsynIf 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 can remove the bonvalsyn package from their project until a secure version is released. This can be done using the command: npm uninstall bonvalsyn.
Conclusion
The bonvalsyn package contains a critical vulnerability due to malicious code. It is essential for developers using this package to take immediate action by updating or removing it to protect their applications from potential threats.
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FAQ
The bonvalsyn package is an npm library used in JavaScript applications for various functionalities.
The malicious code can lead to unauthorized access and exploitation of user data.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
As a temporary measure, you can uninstall the bonvalsyn package until a secure version is available.
Detailed information about the vulnerability can be found on the GitHub repository at https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bonvalsyn/MAL-2025-15954.json.
