Malicious Code Injection in lois-validator-catalyst: A Threat to npm Packages
Summary
MAL-2025-105304: Malicious code in lois-validator-catalyst (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
lois-validator-catalyst is an npm package that is part of the tea.xyz token reward campaign. This package is designed to validate certain functionalities within JavaScript applications. However, it has been compromised, leading to the introduction of malicious scripts that can affect the integrity of the npm registry and the applications relying on it.
Vulnerability Detail
The vulnerability originates from a malicious payload embedded within the lois-validator-catalyst package. This payload modifies the package.json file by removing private flags, altering version numbers, and generating random package names. The intent is to inflate developer reputation scores for token rewards, leading to potential pollution of the npm registry and compromising the security of applications that depend on these packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall lois-validator-catalystIf 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 lois-validator-catalyst package until a secure version is released. Additionally, you can use the following command to uninstall the package: npm uninstall lois-validator-catalyst.
Conclusion
The lois-validator-catalyst package has been compromised with malicious code that poses a significant risk to applications using it. It is crucial to take immediate action by uninstalling the package and monitoring for updates. Utilizing tools like Vulert can help maintain the security of your applications.
See every vulnerability recorded for lois-validator-catalyst →
FAQ
lois-validator-catalyst is an npm package used for validating functionalities in JavaScript applications, but it has been compromised with malicious code.
The malicious code can alter your package.json, inflate developer reputation scores, and potentially lead to the pollution of the npm registry.
You should uninstall the lois-validator-catalyst package immediately and check for any updates or patches from the maintainers.
You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities using just your package-lock.json file.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
