Malicious Code Injection in key_mastodon-toolteadev Package
Summary
MAL-2025-104766: Malicious code in key_mastodon-toolteadev (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The key_mastodon-toolteadev package is part of the npm ecosystem and is utilized in various applications for its functionalities related to the Mastodon social network. However, this package has been compromised, leading to significant security concerns. It is designed to facilitate interactions with the Mastodon API but has been exploited to include malicious scripts that can harm users and developers alike.
Vulnerability Detail
The vulnerability originates from a malicious payload embedded within the key_mastodon-toolteadev package. This payload modifies the package.json file to remove private flags, alters version numbers, and generates random package names to inflate developer reputation scores. The malicious code is part of a broader campaign that floods the npm registry with derivative packages, potentially leading to reputational damage for developers and security risks for users. The continuous republishing of these variants pollutes the npm registry, making it difficult to identify legitimate packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall key_mastodon-toolteadevIf 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 key_mastodon-toolteadev package from your project until a safe version is confirmed. Use the following command to uninstall the package: npm uninstall key_mastodon-toolteadev. Additionally, consider using alternative packages that provide similar functionalities without the associated risks.
Conclusion
The key_mastodon-toolteadev package has been identified as containing malicious code that poses significant risks to developers and users. It is crucial to take immediate action by updating or removing the package to safeguard your applications. Utilizing tools like Vulert can help monitor for such vulnerabilities in real-time.
See every vulnerability recorded for key_mastodon-toolteadev →
FAQ
It is an npm package used for interacting with the Mastodon social network, but it has been compromised with malicious code.
The malicious code can modify your package.json file, remove private flags, and flood the npm registry with harmful packages, potentially leading to security vulnerabilities.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without any signup.
As a workaround, consider uninstalling the key_mastodon-toolteadev package until a safe version is available.
Detailed information can be found in the vulnerability report on the GitHub repository for malicious packages.
