Malicious Code Injection in yodelling_flyingfish_z3n Package
Summary
MAL-2025-92667: Malicious code in yodelling_flyingfish_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The yodelling_flyingfish_z3n package is part of the npm ecosystem, which is widely used for JavaScript package management. This package is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with malicious packages. The primary function of such packages is to manipulate developer reputation scores through automated publishing scripts.
Vulnerability Detail
The vulnerability in the yodelling_flyingfish_z3n package stems from its 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 these variants. The origin of this vulnerability is linked to the tea.xyz token reward campaign, which aims to inflate developer reputation scores by polluting the npm registry with derivative packages. The ramifications include potential security risks for developers who inadvertently use these packages, as they may introduce unwanted behavior or expose sensitive information.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall yodelling_flyingfish_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 remove the yodelling_flyingfish_z3n package from your project by executing: npm uninstall yodelling_flyingfish_z3n. This will prevent any malicious code from executing in your application until a secure version is available.
Conclusion
The yodelling_flyingfish_z3n package contains a serious vulnerability due to its malicious code that alters package configurations and repopulates the npm registry with harmful variants. It is crucial for developers to take immediate action by updating or uninstalling this package to safeguard their applications.
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FAQ
The yodelling_flyingfish_z3n package is an npm package that has been identified as malicious, primarily associated with the tea.xyz token reward campaign.
This vulnerability can lead to unwanted modifications in your package.json file, potentially exposing your application to security risks and affecting its functionality.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By using the Vulert playground, you can check if your application is affected without any signup.
If an immediate update is not possible, consider uninstalling the package as a temporary measure to mitigate risks until a secure version is available.
Detailed information about this vulnerability can be found in the Open Source Vulnerability database, as well as through security advisories related to npm packages.
