Malicious Code Injection in experienced_sailfish_z3n: A Threat to npm Packages
Summary
MAL-2025-102388: Malicious code in experienced_sailfish_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package 'experienced_sailfish_z3n' 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 that aims to exploit npm's publishing system. It is designed to automatically generate and publish derivative packages with randomized names, which can mislead developers and inflate reputation scores for token rewards.
Vulnerability Detail
The vulnerability stems from the package's malicious code that modifies the package.json file by removing private flags and altering version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This can lead to significant security risks, including the potential for dependency confusion and the introduction of further malicious packages into projects that rely on npm.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall experienced_sailfish_z3nIf 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 remove the 'experienced_sailfish_z3n' package from your project by executing: 'npm uninstall experienced_sailfish_z3n'. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities. You can check if your application is affected by this vulnerability using the Vulert playground at https://vulert.com/scanner without any signup.
Conclusion
The 'experienced_sailfish_z3n' package poses a significant security risk due to its malicious code that alters package metadata and floods the npm registry with fake packages. It is crucial for developers to take immediate action by removing the package and monitoring their projects for vulnerabilities.
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FAQ
It is an npm package that has been identified as part of a malicious campaign aimed at exploiting the npm registry.
The vulnerability can lead to the introduction of malicious code into your project, potentially compromising security and functionality.
You should uninstall the package immediately and check for any updates or patches that may be available.
Yes, you can use Vulert to monitor your project for open-source vulnerabilities in real-time using your package-lock.json file.
Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities without requiring an account.
