Malicious Code Execution Vulnerability in internallib_v497 Package
Summary
MAL-2026-16438: Malicious code in internallib_v497 (npm). Affects internallib_v497 versions 1.0.3. No fix is published. How to fix ↓
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Background
The internallib_v497 package is an npm module designed for internal library functionalities. It is intended to provide utility functions for developers. However, this package has been found to contain malicious code that can execute arbitrary commands on the host system, posing a significant security risk to users who incorporate it into their projects.
Vulnerability Detail
The vulnerability originates from the internallib_v497@1.0.3 version, which includes an index.js file that exports a function capable of executing shell commands. Specifically, it uses child_process.exec to run a command that fetches and executes a script from an unauthenticated source (http://10.0.5.109/shell.sh). This means that any user who requires this module and calls the exported command will inadvertently run potentially harmful code from the specified URL, leading to unauthorized access and control over the host system.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall internallib_v497If 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 using the internallib_v497 package until a secure version is released. Additionally, you can implement network security measures to block access to the malicious URL (http://10.0.5.109) to prevent any accidental execution of the malicious script.
Conclusion
The internallib_v497 package contains a serious vulnerability that allows for the execution of malicious code on the host system. Users are urged to update the package immediately and consider using tools like Vulert to monitor for vulnerabilities in their applications.
See every vulnerability recorded for internallib_v497 →
FAQ
The vulnerability allows for the execution of arbitrary commands on the host system by fetching and executing a script from an untrusted source.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By checking your package-lock.json file, you can identify if your application is affected by this vulnerability.
Immediately update the internallib_v497 package to the latest version or remove it from your project until a secure version is available.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
Failure to address this vulnerability could lead to unauthorized access to your system, data breaches, and potential control over your application by malicious actors.
References
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