Malicious Code Injection in ucok-poke43: npm Package Vulnerability

ucok-poke43 Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-169664: Malicious code in ucok-poke43 (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The ucok-poke43 package is part of the npm ecosystem, which is widely used for JavaScript package management. This package has been identified as part of a malicious campaign associated with the tea.xyz token reward initiative. It is designed to manipulate the npm registry by generating and publishing derivative packages with altered attributes, thereby inflating developer reputation scores.

Vulnerability Detail

The vulnerability in ucok-poke43 stems from its malicious payload that modifies the package.json file by removing private flags and changing version numbers. It generates random package names, primarily themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This behavior can lead to security risks, including the potential for dependency confusion and the introduction of further malicious packages into projects that rely on ucok-poke43.

How To Fix

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

npm uninstall ucok-poke43

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

As a temporary workaround, avoid using ucok-poke43 and any packages that depend on it. Regularly audit your project's dependencies using tools like npm audit to identify and address vulnerabilities.

Conclusion

The ucok-poke43 package poses a significant security risk due to its malicious behavior of altering package attributes and republishing variants. Immediate action is required to remove this package and safeguard your project from potential threats. Regular monitoring and auditing of dependencies are crucial for maintaining security.

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FAQ

ucok-poke43 is an npm package that has been identified as part of a malicious campaign aimed at manipulating the npm registry.

The vulnerability can lead to the introduction of malicious code into your project, potentially compromising its security and integrity.

You should uninstall ucok-poke43 immediately and audit your project for any other affected packages.

You can use tools like Vulert, which monitors your package-lock.json for 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.

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How To Fix

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

npm uninstall ucok-poke43

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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