Malicious Code Injection in thin_pig_z3n Package
Summary
MAL-2025-91018: Malicious code in thin_pig_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The thin_pig_z3n package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the automatic generation and publication of derivative packages, which can inflate developer reputation scores for token rewards. However, it has been identified as containing malicious scripts that compromise its integrity and the security of the npm registry.
Vulnerability Detail
The vulnerability in the thin_pig_z3n package stems from its inclusion in a series of malicious packages that modify the package.json file to remove private flags, alter version numbers, and generate random package names. This behavior leads to the continuous republishing of variants, polluting the npm registry and potentially affecting other developers and users who rely on the integrity of the npm ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall thin_pig_z3nIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
Currently, there are no specific workarounds to mitigate the effects of this vulnerability other than removing the package entirely from your project.
Conclusion
The thin_pig_z3n package has been identified as containing malicious code that compromises the security of the npm ecosystem. It is essential to remove this package from your projects to protect against potential vulnerabilities. Regular monitoring of your dependencies is crucial to maintain the integrity of your applications.
See every vulnerability recorded for thin_pig_z3n →
FAQ
The thin_pig_z3n package is an npm package associated with the tea.xyz token reward campaign, designed to generate and publish derivative packages.
The vulnerability can lead to the pollution of the npm registry, affecting the integrity of your project and potentially introducing malicious code.
Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. You can check your application using the Vulert playground without any signup.
You should uninstall the thin_pig_z3n package immediately using the command: npm uninstall thin_pig_z3n.
Currently, there are no patched versions available for the thin_pig_z3n package, so the best course of action is to remove it from your project.
