Malicious Code Injection in wet_loon_z3n: A Threat to npm Ecosystem
Summary
MAL-2025-110821: Malicious code in wet_loon_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package 'wet_loon_z3n' is part of a series of npm packages that emerged during the tea.xyz token reward campaign. These packages are designed to manipulate npm's publishing system, often containing scripts that automatically generate and publish derivative packages. This behavior aims to inflate developer reputation scores for rewards associated with the tea protocol, making it a significant concern for developers relying on npm for package management.
Vulnerability Detail
The vulnerability in 'wet_loon_z3n' stems from its malicious code that modifies the package.json file. It removes private flags, alters version numbers, and generates random package names, leading to the continuous republishing of variants that pollute the npm registry. This not only compromises the integrity of the npm ecosystem but also poses risks to developers who may unknowingly use these compromised packages, potentially leading to security breaches and loss of trust in the package management system.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall wet_loon_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 'wet_loon_z3n' and any other packages associated with the tea.xyz token reward campaign. 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 'wet_loon_z3n' package poses a significant threat due to its malicious code designed to manipulate the npm registry. Developers should take immediate action to remove this package and monitor their projects for vulnerabilities. Utilizing tools like Vulert can enhance security and provide real-time alerts for any open-source vulnerabilities.
See every vulnerability recorded for wet_loon_z3n →
FAQ
'wet_loon_z3n' is an npm package that is part of a malicious campaign aimed at manipulating the npm registry for token rewards.
The vulnerability can lead to the injection of malicious code into your project, compromising its security and integrity.
You should remove 'wet_loon_z3n' from your project and monitor for any updates or patches that may be released.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file.
Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without any signup.
