Malicious Code Injection in mafanfs-matfddu-masan Package
Summary
MAL-2025-159008: Malicious code in mafanfs-matfddu-masan (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 mafanfs-matfddu-masan 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 publication of derivative packages, which can inflate developer reputation scores for token rewards. However, it has been identified as containing malicious scripts that compromise its integrity.
Vulnerability Detail
The vulnerability in mafanfs-matfddu-masan originates from its involvement in a malicious campaign that floods the npm registry with derivative packages. The package includes scripts that modify the package.json file to remove private flags, alter version numbers, and generate random package names. This behavior not only pollutes the npm registry but also poses a risk to developers who may unknowingly install these compromised packages, leading to potential security breaches and loss of trust in the npm ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall mafanfs-matfddu-masanIf 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 mafanfs-matfddu-masan package altogether and look for alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities in real-time.
Conclusion
The mafanfs-matfddu-masan package poses a significant risk due to its malicious code that alters package configurations and floods the npm registry. It is essential to remove this package from your projects and monitor for vulnerabilities using tools like Vulert to ensure the security of your applications.
See every vulnerability recorded for mafanfs-matfddu-masan →
FAQ
It is an npm package associated with the tea.xyz token reward campaign, designed to generate and publish derivative packages.
The vulnerability can lead to the installation of malicious packages that compromise your project's security and integrity.
You should uninstall the mafanfs-matfddu-masan package immediately and check for any dependencies that may be affected.
Yes, you can use Vulert to monitor your project for open-source vulnerabilities in real-time without needing to access the code.
Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without any signup.
