Malicious Code Injection in overseas_wombat_z3n: A Threat to npm Ecosystem
Summary
MAL-2025-89345: Malicious code in overseas_wombat_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package 'overseas_wombat_z3n' is part of a series of npm packages that emerged during the tea.xyz token reward campaign. These packages are designed to inflate developer reputation scores by automatically generating and publishing derivative packages with randomized names. This behavior not only clutters the npm registry but also poses a significant risk to developers who may unknowingly use these compromised packages.
Vulnerability Detail
The vulnerability in 'overseas_wombat_z3n' originates from its malicious payload, which modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior allows the package to continuously republish variants, polluting the npm registry and potentially leading to security risks for developers who rely on these packages. The malicious scripts included in the package are designed to automate this process, making it difficult for users to detect the issue.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall overseas_wombat_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 'overseas_wombat_z3n' package and look for alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities. You can check if your application is affected by this vulnerability using the Vulert playground at https://vulert.com/scanner without any signup.
Conclusion
The 'overseas_wombat_z3n' package poses a significant threat to the npm ecosystem due to its malicious behavior aimed at inflating developer reputation scores. It is essential to remove this package from your projects and monitor for similar vulnerabilities using tools like Vulert. Staying vigilant and proactive can help safeguard your applications from such threats.
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FAQ
It is an npm package that is part of a malicious campaign aimed at inflating developer reputation scores through automated publishing of derivative packages.
The vulnerability can lead to the pollution of the npm registry, making it difficult to manage dependencies and potentially introducing security risks into your project.
You should uninstall the 'overseas_wombat_z3n' package immediately and check for any other affected packages in your project.
Yes, tools like Vulert can help monitor your project for open-source vulnerabilities in real-time using just the package-lock.json file.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
