Malicious Code Injection in mulyono-rujak7-apidev Package
Summary
MAL-2025-88523: Malicious code in mulyono-rujak7-apidev (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 mulyono-rujak7-apidev package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. It is designed to facilitate the generation and publication of derivative packages, which can inflate developer reputation scores for token rewards. However, this package has been identified as malicious due to its ability to modify package.json files and republish variants, leading to potential pollution of the npm registry.
Vulnerability Detail
The vulnerability originates from the package's malicious payload, which alters the package.json file by removing private flags and changing version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants. This behavior not only compromises the integrity of the npm registry but also poses risks to developers who may unknowingly use these compromised packages, leading to security vulnerabilities in their applications.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall mulyono-rujak7-apidev
If 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 mulyono-rujak7-apidev package and instead look for alternative packages that provide similar functionality without the associated risks. Additionally, you can monitor your package-lock.json file for any unauthorized changes.
Conclusion
The mulyono-rujak7-apidev package has been identified as malicious, posing significant risks to developers and the integrity of the npm registry. It is crucial to remove this package and monitor your dependencies for vulnerabilities to ensure the security of your applications.
See every vulnerability recorded for mulyono-rujak7-apidev →
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 pollution of the npm registry and may introduce security risks if compromised packages are used in your project.
You should remove the mulyono-rujak7-apidev package from your project and monitor for any updates or patches.
You can use tools like Vulert, which monitors your package-lock.json file to alert you in real-time for open-source vulnerabilities.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.