Critical Malicious Code Vulnerability in internallib_v875 Package
Summary
MAL-2026-17635: Malicious code in internallib_v875 (npm). Affects internallib_v875 versions 1.0.1. No fix is published. How to fix ↓
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Background
The internallib_v875 package is an npm library designed for internal use, but it has been found to contain malicious code. This package is intended to provide certain functionalities, but its integrity has been compromised, making it a potential threat to any application that includes it.
Vulnerability Detail
The vulnerability originates from the internallib_v875 package, which contains an index.js file that exports a command() function. This function executes a shell command using /bin/bash -c, which fetches a reverse-shell payload from a hardcoded endpoint (10.0.19.80:8443) via curl piped to sh. This allows an attacker to gain an interactive shell on the host running the package, posing a severe security risk. The malicious code is executed without any verification, and the package lacks legitimate functionality, making it a clear case of embedded malicious code.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall internallib_v875If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, you can avoid using the command() function from the internallib_v875 package. Instead, consider using alternative libraries that provide similar functionality without the associated risks.
Conclusion
The internallib_v875 package contains a critical vulnerability that allows for the execution of malicious code, posing a significant risk to any application that utilizes it. Immediate action is required to remove the package and safeguard your system.
See every vulnerability recorded for internallib_v875 →
FAQ
The vulnerability involves malicious code that executes a reverse shell command, allowing attackers to gain unauthorized access to the host.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Check your package-lock.json file for any affected packages.
Immediately remove the package from your project and check for any signs of compromise in your application.
Regularly audit your dependencies, use tools like Vulert for real-time monitoring, and only install packages from trusted sources.
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