Malicious Code Injection in blonde_flyingfish_z3n Package
Summary
MAL-2025-100015: Malicious code in blonde_flyingfish_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 blonde_flyingfish_z3n package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. It is designed to facilitate the automatic generation and publication of derivative packages. This package, like others in its category, aims to inflate developer reputation scores for token rewards, but it has been compromised to include malicious scripts.
Vulnerability Detail
The vulnerability in the blonde_flyingfish_z3n package stems from malicious code that modifies the package.json file. This code removes private flags, alters version numbers, and generates random package names, leading to the continuous republishing of variants. The origin of this vulnerability is linked to a campaign that floods the npm registry with these malicious packages, potentially harming developers and users by polluting the registry and compromising their projects.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall blonde_flyingfish_z3n
If 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
As a temporary measure, you can avoid using the blonde_flyingfish_z3n package and consider using alternative packages that provide similar functionality without the associated risks.
Conclusion
The blonde_flyingfish_z3n package contains a serious vulnerability due to malicious code that alters project files and repopulates the npm registry with harmful variants. It is crucial to uninstall this package and monitor your projects for similar vulnerabilities using tools like Vulert.
See every vulnerability recorded for blonde_flyingfish_z3n →
FAQ
The blonde_flyingfish_z3n package is an npm package associated with the tea.xyz token reward campaign, designed to automate the generation and publication of derivative packages.
The vulnerability can lead to the modification of your package.json file, potentially compromising your project's integrity and security by introducing unwanted changes and republishing malicious variants.
If you have installed the blonde_flyingfish_z3n package, you should uninstall it immediately using the command: npm uninstall blonde_flyingfish_z3n.
Yes, tools like Vulert can monitor and alert you in real-time for open-source vulnerabilities in your software. You can check your application for vulnerabilities using the Vulert playground without any signup.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability by analyzing your package-lock.json file.