Malicious Code Injection in putra-lengko77-kyuki: A Threat to npm Users

putra-lengko77-kyuki Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-89578: Malicious code in putra-lengko77-kyuki (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The package 'putra-lengko77-kyuki' is part of the npm ecosystem, which is widely used for JavaScript package management. It is associated with the tea.xyz token reward campaign, which has been linked to the proliferation of malicious packages designed to inflate developer reputation scores. This package, like others in the campaign, contains scripts that automate the generation and publication of derivative packages, potentially compromising the integrity of the npm registry.

Vulnerability Detail

The vulnerability in 'putra-lengko77-kyuki' originates from its malicious payload that modifies the package.json file. It removes private flags, alters version numbers, and generates random package names, leading to the continuous republishing of variants. This behavior not only pollutes the npm registry but also poses risks to developers who may unknowingly install these compromised packages, potentially leading to security breaches in their applications.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall putra-lengko77-kyuki

If 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 the 'putra-lengko77-kyuki' package and look for alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your package-lock.json for vulnerabilities.

Conclusion

The 'putra-lengko77-kyuki' package poses a significant threat due to its malicious code designed to manipulate the npm registry. Developers are advised to remove this package and monitor their projects for vulnerabilities using tools like Vulert. Staying informed and proactive is essential to maintaining the security of your applications.

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FAQ

The malicious code can lead to the pollution of the npm registry and compromise the security of applications that depend on this package.

You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

You should uninstall the package immediately using 'npm uninstall putra-lengko77-kyuki' and look for alternatives.

Currently, there is no specific patched version available for putra-lengko77-kyuki, so the best course of action is to remove it.

Vulert uses your package-lock.json to monitor and alert you in real-time for open-source vulnerabilities in your software, ensuring you stay informed about potential threats.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall putra-lengko77-kyuki

If 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 →

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