Malicious Code Injection in grotesque_kiwi-tool: A Threat to npm Users
Summary
MAL-2025-103402: Malicious code in grotesque_kiwi-tool (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The grotesque_kiwi-tool is an npm package that has been identified as part of a malicious campaign targeting the npm registry. This package is designed to exploit the npm ecosystem by generating and publishing derivative packages with randomized names, aimed at inflating developer reputation scores for token rewards. The malicious nature of this package poses a significant risk to developers and users who may unknowingly incorporate it into their projects.
Vulnerability Detail
The vulnerability stems from the package's malicious payload, which modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior leads to the continuous republishing of variants that can pollute the npm registry, making it difficult for developers to identify legitimate packages. The origin of this vulnerability is linked to the tea.xyz token reward campaign, which has flooded the npm ecosystem with similar malicious packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall grotesque_kiwi-toolIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, you can avoid using the grotesque_kiwi-tool package and monitor your project's dependencies for any malicious activity. Consider using tools like Vulert to scan your package-lock.json file for vulnerabilities. You can access the Vulert playground at https://vulert.com/scanner to check if your application is affected by this vulnerability without requiring any signup.
Conclusion
The grotesque_kiwi-tool package poses a significant threat to the npm ecosystem due to its malicious behavior. Developers should take immediate action to remove this package and monitor their dependencies for vulnerabilities. Utilizing tools like Vulert can help maintain the security of your projects.
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FAQ
grotesque_kiwi-tool is an npm package identified as part of a malicious campaign that generates and publishes derivative packages to inflate developer reputation scores.
The vulnerability can lead to the pollution of the npm registry with malicious packages, making it challenging to identify legitimate dependencies and potentially compromising your project's security.
You should uninstall the package immediately using the command npm uninstall grotesque_kiwi-tool and check your project for any other vulnerable dependencies.
You can use tools like Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without signup.
No, there are no patches available for grotesque_kiwi-tool as it is a malicious package. The best course of action is to remove it from your project.
