Malicious Code Vulnerability in fish-notthedevs Package
Summary
MAL-2025-102744: Malicious code in fish-notthedevs (npm). Affected versions are not published. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The fish-notthedevs package is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like many others, is intended to facilitate the development and sharing of JavaScript code. However, it has been identified as part of a malicious campaign that exploits npm's publishing capabilities, leading to potential security risks for developers and their applications.
Vulnerability Detail
The vulnerability originates from the fish-notthedevs package being associated with a malicious campaign that floods the npm registry with derivative packages. These packages contain scripts designed to modify the package.json file by removing private flags, changing version numbers, and generating random package names. This behavior not only pollutes the npm registry but also poses a risk of unintentional dependency inclusion in projects, leading to potential security breaches and reputation damage for developers.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall fish-notthedevsIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, you can avoid using the fish-notthedevs package and any packages that depend on it. Regularly audit your package-lock.json file to identify and remove any potentially malicious packages.
Conclusion
The fish-notthedevs package poses a significant security risk due to its malicious nature, which can lead to the pollution of the npm registry and potential exploitation in applications. It is crucial for developers to remove this package and monitor their dependencies to maintain the security of their projects.
See every vulnerability recorded for fish-notthedevs →
FAQ
The fish-notthedevs package is an npm package that has been identified as part of a malicious campaign to flood the npm registry with derivative packages.
This vulnerability can lead to the inclusion of malicious code in your application, potentially compromising its security and integrity.
If you have installed the fish-notthedevs package, you should uninstall it immediately using 'npm uninstall fish-notthedevs' and audit your dependencies.
You can use tools like Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time 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 any signup.
