Malicious Code Injection in slim_angelfish_z3n: A Threat to npm Packages
Summary
MAL-2025-90684: Malicious code in slim_angelfish_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The slim_angelfish_z3n package is part of the npm ecosystem, which is widely used for JavaScript package management. This package has been identified as part of a malicious campaign that aims to exploit the npm registry by flooding it with derivative packages. These packages are designed to inflate developer reputation scores through automated scripts that generate and publish numerous variants with randomized names.
Vulnerability Detail
The vulnerability in slim_angelfish_z3n originates from its association with the tea.xyz token reward campaign, which has been linked to malicious activities on npm. The package contains scripts 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 compromising the integrity of other packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall slim_angelfish_z3nIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, you can avoid using the slim_angelfish_z3n package and any packages that depend on it. Regularly audit your package dependencies using tools like npm audit to identify and mitigate vulnerabilities.
Conclusion
The slim_angelfish_z3n package poses a significant risk due to its malicious code designed to manipulate the npm registry. It is crucial for developers to remove this package from their projects and to utilize tools like Vulert for ongoing vulnerability monitoring.
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FAQ
slim_angelfish_z3n is an npm package that has been identified as part of a malicious campaign to exploit the npm registry.
This vulnerability can lead to the pollution of the npm registry and may compromise the integrity of your application by introducing malicious code.
If you have installed slim_angelfish_z3n, you should uninstall it immediately using 'npm uninstall slim_angelfish_z3n'.
You can use tools like Vulert to monitor your application for open-source vulnerabilities in real-time. Vulert requires only the package-lock.json file for monitoring.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
