Malicious Code Injection in uinsu-losit-bisa: A Threat to npm Packages
Summary
MAL-2025-169899: Malicious code in uinsu-losit-bisa (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package 'uinsu-losit-bisa' is part of a series of npm packages that emerged during the tea.xyz token reward campaign. These packages are designed to inflate developer reputation scores by automatically generating and publishing derivative packages with randomized names. The malicious nature of this package lies in its ability to modify critical files, such as package.json, thereby compromising the integrity of the npm registry.
Vulnerability Detail
The vulnerability in 'uinsu-losit-bisa' originates from its malicious payload, which alters the package.json file to remove private flags, modifies version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, polluting the npm registry and potentially affecting other developers by inflating reputation scores through deceptive practices. The malicious scripts included in the package are designed to execute automatically, making it a significant threat to the integrity of the npm ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall uinsu-losit-bisaIf 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 'uinsu-losit-bisa' package and monitor your project for any unintended consequences from its presence. Consider using tools like Vulert to monitor your package-lock.json for vulnerabilities in real-time.
Conclusion
The 'uinsu-losit-bisa' package poses a significant threat to the npm ecosystem due to its malicious code designed to manipulate package metadata and inflate developer reputation scores. It is essential to remove this package from your projects and monitor for any vulnerabilities using tools like Vulert to ensure the security of your applications.
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FAQ
The 'uinsu-losit-bisa' package is an npm package that is part of a malicious campaign aimed at inflating developer reputation scores through deceptive practices.
The vulnerability can lead to the modification of your package.json file, potentially compromising your project's integrity and allowing for the pollution of the npm registry.
You should uninstall the 'uinsu-losit-bisa' package immediately using 'npm uninstall uinsu-losit-bisa' and check your project for any other affected packages.
You can use Vulert, which monitors your package-lock.json for open-source vulnerabilities in real-time, alerting you to any issues 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 needing to sign up.
