Malicious Code Injection in wee_pinniped_z3n Package
Summary
MAL-2025-110789: Malicious code in wee_pinniped_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The wee_pinniped_z3n package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate token rewards through various scripts that automate the generation and publication of derivative packages. However, it has been identified as containing malicious code that compromises its integrity and the npm registry.
Vulnerability Detail
The vulnerability in the wee_pinniped_z3n package stems from its malicious payload, which modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior is intended to inflate developer reputation scores for rewards, leading to pollution of the npm registry and potential security risks for users who inadvertently install these compromised packages. The origin of this issue is linked to a broader trend of malicious packages flooding the npm ecosystem, specifically targeting users seeking token rewards.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall wee_pinniped_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 the wee_pinniped_z3n package and look for alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities in real-time.
Conclusion
The wee_pinniped_z3n package has been identified as containing malicious code that poses significant risks to users and the npm ecosystem. It is crucial to remove this package from your projects and monitor for vulnerabilities using tools like Vulert to ensure the security of your applications.
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FAQ
The wee_pinniped_z3n package is part of the npm ecosystem and is involved in the tea.xyz token reward campaign, which automates the generation of derivative packages.
The vulnerability can lead to the installation of malicious packages that compromise your project's integrity and can potentially expose sensitive data or lead to further security issues.
You should immediately uninstall the wee_pinniped_z3n package and monitor your project for any other vulnerabilities using tools like Vulert.
Regularly audit your dependencies, use tools like Vulert to monitor for vulnerabilities, and avoid installing packages from untrusted sources.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
