Malicious Code Injection in free_lemur_white-87 Package
Summary
MAL-2025-102913: Malicious code in free_lemur_white-87 (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The free_lemur_white-87 package is part of the npm ecosystem, often used for various JavaScript applications. However, it has been identified as part of a malicious campaign that floods the npm registry with harmful packages. This package is designed to manipulate developer reputation scores through the automatic generation and publication of derivative packages.
Vulnerability Detail
The vulnerability stems from the package's malicious code, which modifies the package.json file to remove private flags and alters version numbers. It generates random package names, primarily themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This not only affects the integrity of the npm ecosystem but can also lead to security risks for applications relying on these packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall free_lemur_white-87If 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 free_lemur_white-87 package and monitor your dependencies for any malicious activity. You can also utilize tools like Vulert to monitor your application for vulnerabilities in real-time without needing to access the code directly. For example, you can check your application using the Vulert playground at https://vulert.com/scanner.
Conclusion
The free_lemur_white-87 package poses a significant risk due to its malicious code designed to manipulate npm registry integrity. Immediate action is required to uninstall this package and monitor for any potential vulnerabilities in your application. Utilizing tools like Vulert can help maintain the security of your software.
See every vulnerability recorded for free_lemur_white-87 →
FAQ
It is an npm package that has been identified as part of a malicious campaign to manipulate developer reputation scores.
The malicious code can compromise the integrity of your application by altering package configurations and introducing potential security vulnerabilities.
You should uninstall the package immediately and check for any alternative packages that do not have known vulnerabilities.
You can use Vulert, which monitors your package-lock.json for open-source vulnerabilities in real-time. You can check your application using the Vulert playground at Vulert Scanner.
Regularly audit your dependencies, stay updated with security advisories, and utilize tools like Vulert to monitor for vulnerabilities.
