Malicious Code Injection in sebastian-teadev: npm Package Vulnerability
Summary
MAL-2025-108444: Malicious code in sebastian-teadev (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The sebastian-teadev package is part of the npm ecosystem, which is widely used for JavaScript development. It is designed to facilitate various development tasks. However, this package has been identified as part of a malicious campaign that floods the npm registry with harmful scripts aimed at manipulating developer reputation scores for token rewards.
Vulnerability Detail
The vulnerability in the sebastian-teadev package stems from its association with a malicious campaign that includes scripts designed to automatically publish derivative packages with randomized names. These scripts modify the package.json file to remove private flags, alter version numbers, and continuously republish variants, thereby polluting the npm registry. The origin of this vulnerability is linked to the tea.xyz token reward campaign, which exploits npm's publishing mechanisms.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall sebastian-teadevIf 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 sebastian-teadev package and look for alternative packages that provide similar functionality without the associated risks. Always verify the integrity and reputation of packages before including them in your project.
Conclusion
The sebastian-teadev package has been identified as a vector for malicious code injection, posing significant risks to developers and their applications. It is essential to remove this package and monitor your dependencies for vulnerabilities to maintain the security of your projects.
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FAQ
The sebastian-teadev package is an npm package used in JavaScript development, but it has been compromised and is part of a malicious campaign.
This vulnerability can lead to the pollution of the npm registry and may compromise the integrity of your application by introducing malicious code.
You should uninstall the sebastian-teadev package immediately and check your project for any other potentially compromised packages.
You can use tools like Vulert, which monitors your package-lock.json file to alert you in real-time for open-source vulnerabilities.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
