Malicious Code Injection in inappropriate_coyote_z3n: A Threat to npm Packages
Summary
MAL-2025-104047: Malicious code in inappropriate_coyote_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package 'inappropriate_coyote_z3n' is part of a series of malicious npm packages associated with the tea.xyz token reward campaign. These packages are designed to manipulate the npm registry by automatically generating and publishing derivative packages with altered names and metadata. The primary function of these packages is to inflate developer reputation scores for token rewards, making them a significant threat to the integrity of the npm ecosystem.
Vulnerability Detail
The vulnerability in 'inappropriate_coyote_z3n' stems from its inclusion in a malicious campaign that employs scripts to modify package.json files. This manipulation removes private flags, alters version numbers, and generates random package names, leading to the continuous republishing of these variants. The ramifications include pollution of the npm registry, potential security risks for developers using these packages, and a compromised reputation system within the npm ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall inappropriate_coyote_z3nIf 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 prevent the installation of this package by adding it to your project's .npmrc file with the following line: 'package-lock=false'. This will help avoid the installation of potentially harmful packages until a fix is applied.
Conclusion
The inappropriate_coyote_z3n package poses a significant threat to the npm ecosystem due to its malicious intent to manipulate package metadata and inflate developer reputation scores. It is essential for developers to be vigilant, remove affected packages, and utilize tools like Vulert to monitor for vulnerabilities in their projects.
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FAQ
The inappropriate_coyote_z3n package is part of a malicious campaign that aims to exploit the npm registry for token rewards.
This vulnerability can lead to the pollution of your project's dependencies, potentially introducing security risks and affecting the integrity of your application.
If you have installed the inappropriate_coyote_z3n package, it is crucial to remove it immediately and check your project for any other affected packages.
You can use tools like Vulert, which monitors your package-lock.json file to alert you in real-time for open-source vulnerabilities.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
