Malicious Code Injection in kentung-81 Package: A Threat to npm Users
Summary
MAL-2025-157566: Malicious code in kentung-81 (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The kentung-81 package is part of a broader campaign that exploits npm's ecosystem by flooding it with malicious packages. These packages are designed to manipulate developer reputation scores through automated scripts that publish derivative packages with randomized names. This behavior not only affects the integrity of the npm registry but also poses risks to developers who may unknowingly use these compromised packages.
Vulnerability Detail
The vulnerability in the kentung-81 package originates from its involvement in the tea.xyz token reward campaign. It contains scripts that modify the package.json file by removing private flags, altering version numbers, and generating random package names. This malicious behavior leads to the continuous republishing of variants, which pollutes the npm registry and can compromise the security of applications that depend on these packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall kentung-81If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, avoid using the kentung-81 package and monitor your dependencies for any similar malicious packages. You can also utilize tools like Vulert to scan your package-lock.json file for vulnerabilities.
Conclusion
The kentung-81 package poses a significant threat to npm users due to its malicious code that manipulates package metadata and floods the npm registry. It is crucial to remove this package and regularly monitor your dependencies to maintain the security of your applications.
See every vulnerability recorded for kentung-81 →
FAQ
The kentung-81 package is a malicious npm package that is part of a campaign to inflate developer reputation scores through automated publishing of derivative packages.
The vulnerability can lead to the introduction of compromised code into your application, potentially exposing it to security risks and instability.
You should immediately uninstall the kentung-81 package and review your project's dependencies for any other malicious packages.
Yes, regularly audit your dependencies, use tools like Vulert to monitor for vulnerabilities, and avoid using unverified packages.
Vulert is a tool that monitors and alerts for open-source vulnerabilities in your software using just the package-lock.json file. You can check for vulnerabilities without any installation through the Vulert playground.
