Malicious Code Injection in mans-mana-nuts Package: A Threat to npm Users
Summary
MAL-2025-159665: Malicious code in mans-mana-nuts (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The 'mans-mana-nuts' package is part of the npm ecosystem, primarily used for JavaScript development. It is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with various packages. This package, like others in its category, is designed to manipulate npm's publishing system, potentially harming developers' reputations and the integrity of the npm registry.
Vulnerability Detail
The vulnerability in the 'mans-mana-nuts' 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 automatic publication of derivative packages. The origin of this malicious behavior is linked to a campaign aimed at inflating developer reputation scores for token rewards, which can result in a polluted npm registry and compromised security for users.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall mans-mana-nutsIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, users can avoid using the 'mans-mana-nuts' package altogether or remove it from their project by executing: 'npm uninstall mans-mana-nuts'. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities.
Conclusion
The 'mans-mana-nuts' package poses a significant threat due to its malicious code that alters package metadata and publishes derivative packages. Users are advised to update or remove the package and utilize tools like Vulert for ongoing vulnerability monitoring.
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FAQ
It is an npm package associated with the tea.xyz token reward campaign, designed to manipulate npm's publishing system.
The vulnerability can lead to the automatic publication of malicious packages, compromising the integrity of your project and potentially harming your reputation.
You should uninstall the package immediately and check for any updates or patches that may be available.
Yes, Vulert can monitor your package-lock.json file for vulnerabilities in real-time without requiring code access or installation.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without signing up.
