Malicious Code Injection in kuinsu-uki-vilami: A Threat to npm Packages
Summary
MAL-2025-157822: Malicious code in kuinsu-uki-vilami (npm). Affected versions are not published. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
kuinsu-uki-vilami is an npm package that is part of a broader token reward campaign associated with the tea.xyz protocol. This package, like others in the campaign, is designed to manipulate the npm registry by generating and publishing numerous derivative packages with randomized names. Its primary function is to inflate developer reputation scores for token rewards, but this comes at the cost of security and integrity within the npm ecosystem.
Vulnerability Detail
The vulnerability in kuinsu-uki-vilami 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 continuously republish variants, polluting the npm registry and potentially leading to security risks for developers who unknowingly use these compromised packages. The origin of this vulnerability is linked to the tea.xyz token reward campaign, which employs autopublish scripts to automate the creation of these malicious packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall kuinsu-uki-vilamiIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, you can avoid using kuinsu-uki-vilami and any other packages associated with the tea.xyz token reward campaign. Regularly audit your package.json and package-lock.json files to identify and remove any suspicious or untrusted packages.
Conclusion
The kuinsu-uki-vilami package poses a significant threat due to its malicious code that manipulates the npm registry. It is crucial for developers to be vigilant, regularly audit their dependencies, and utilize tools like Vulert to monitor for vulnerabilities. Taking proactive steps to remove compromised packages will help maintain the integrity and security of your projects.
See every vulnerability recorded for kuinsu-uki-vilami →
FAQ
kuinsu-uki-vilami is an npm package involved in a token reward campaign that generates and publishes derivative packages to inflate developer reputation scores.
The vulnerability can lead to the pollution of the npm registry, potentially introducing malicious code into your project and compromising its security.
You should uninstall the package immediately using the command npm uninstall kuinsu-uki-vilami and audit your dependencies for any other suspicious packages.
You can use tools like Vulert, which monitors your package-lock.json for open-source vulnerabilities in real-time without requiring code access or installation.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
