Malicious Code Injection in irashi-s-sza: npm Package Vulnerability
Summary
MAL-2025-156900: Malicious code in irashi-s-sza (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The irashi-s-sza package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the automatic generation and publishing of derivative packages, which can inflate developer reputation scores for token rewards. However, it has been identified as containing malicious code that compromises the integrity of the npm registry.
Vulnerability Detail
The vulnerability originates from the package's design to include autopublish scripts that modify the package.json file by removing private flags and changing version numbers. It generates random package names and continuously republishes variants, leading to pollution of the npm registry. This can result in developers inadvertently using compromised packages, exposing their applications to further vulnerabilities and malicious activities.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall irashi-s-szaIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, you can prevent the installation of the irashi-s-sza package by using the following command to uninstall it: npm uninstall irashi-s-sza. Additionally, consider using a package-lock.json file to lock your dependencies to known safe versions.
Conclusion
The irashi-s-sza package poses a significant risk due to its malicious code that alters package metadata and repopulates the npm registry with compromised versions. It is crucial for developers to remove this package and monitor their dependencies for vulnerabilities to maintain application security.
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FAQ
The irashi-s-sza package is an npm package associated with a token reward campaign that has been identified to contain malicious code.
The vulnerability can lead to the installation of compromised packages, which may introduce further security risks and malicious behavior in your application.
If you have installed the irashi-s-sza package, you should uninstall it immediately and monitor your application for any unusual behavior.
Yes, you can use tools like Vulert, which monitors and alerts for open-source vulnerabilities in your software by analyzing your package-lock.json file.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
