Malicious Code Injection in weekly_bug_z3n: A Threat to npm Packages
Summary
MAL-2025-92185: Malicious code in weekly_bug_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package 'weekly_bug_z3n' is part of the npm ecosystem, which is widely used for JavaScript package management. It is often utilized by developers to share and manage code libraries. However, this package has been identified as part of a malicious campaign that aims to inflate developer reputation scores through the creation of numerous derivative packages. This vulnerability poses a significant risk to the integrity of the npm registry and the security of applications relying on this package.
Vulnerability Detail
The vulnerability in 'weekly_bug_z3n' originates from its association with the tea.xyz token reward campaign, which floods the npm registry with malicious packages. The malicious code modifies the package.json file to remove private flags, alters version numbers, and generates random package names, leading to the continuous republishing of these variants. This not only pollutes the npm registry but also compromises the security of applications that depend on these packages, potentially allowing for further exploitation.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall weekly_bug_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 avoid using the 'weekly_bug_z3n' package and replace it with a reputable alternative. Always verify the integrity of packages before including them in your project.
Conclusion
The 'weekly_bug_z3n' package presents a significant security threat due to its malicious code designed to manipulate the npm registry. It is crucial for developers to be vigilant and remove this package from their projects to maintain the integrity and security of their applications.
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FAQ
The 'weekly_bug_z3n' package is an npm package that has been identified as malicious, designed to inflate developer reputation scores through the creation of numerous derivative packages.
This vulnerability can compromise the integrity of your application by introducing malicious code that may lead to further exploitation or data breaches.
If you have installed 'weekly_bug_z3n', you should uninstall it immediately using 'npm uninstall weekly_bug_z3n' and check for any other affected packages.
You can use tools like Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time. You can also check your application against known vulnerabilities using the Vulert playground.
There is no patch for 'weekly_bug_z3n' as it is a malicious package. The best course of action is to remove it from your project.
