Malicious Code Injection in manda-42: A Threat to npm Ecosystem

manda-42 Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-159640: Malicious code in manda-42 (npm). Affected versions are not published. No fix is published. How to fix ↓

Free scan

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.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats
SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml
Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile
Javascript package-lock.json · yarn.lock · pnpm-lock.yaml
PHP composer.lock
Python poetry.lock · requirements.txt · Pipfile.lock
Go go.mod
Rust Cargo.lock
Ruby Gemfile.lock
Dart pubspec.lock
C/C++ conan.lock
Elixir mix.lock
Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Sponsored Devnack Penetration testing for web, API and mobile Manual testing by engineers who build software, not an auditor's checklist. Trusted by teams at Swift and Google Talk to Devnack

Background

manda-42 is an npm package that is part of a broader campaign to exploit the npm ecosystem. It is designed to facilitate the tea.xyz token reward system, which incentivizes developers through token rewards. However, this package has been identified as malicious, containing scripts that manipulate package metadata and flood the npm registry with harmful variants.

Vulnerability Detail

The vulnerability in manda-42 stems from its inclusion in a malicious campaign that utilizes autopublish scripts to modify package.json files. These scripts remove private flags, alter version numbers, and generate random package names, ultimately leading to the pollution of the npm registry. The origin of this issue is linked to the tea.xyz token reward campaign, which aims to inflate developer reputation scores through deceptive practices.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall manda-42

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 measure, avoid using the manda-42 package and monitor your project for any dependencies that may inadvertently include it. Regularly audit your dependencies using tools like npm audit to identify and address vulnerabilities.

Conclusion

The manda-42 package poses a significant threat to the npm ecosystem due to its malicious code that modifies package metadata and floods the registry. It is essential to remove this package from your project and monitor your dependencies to ensure the security of your applications.

See every vulnerability recorded for manda-42 →

Share this vulnerability

FAQ

The manda-42 vulnerability can lead to the modification of your project's package.json file, potentially exposing your project to further risks and pollution of the npm registry.

You can use Vulert to monitor your project for vulnerabilities. By analyzing your package-lock.json file, Vulert provides real-time alerts for open-source vulnerabilities.

To prevent similar vulnerabilities, regularly audit your dependencies, avoid using unverified packages, and utilize tools like Vulert for real-time monitoring.

If you have installed manda-42, immediately uninstall it using npm uninstall manda-42 and check your project for any other affected packages.

Yes, you can use npm safely by being cautious about the packages you install, regularly auditing your dependencies, and utilizing tools like Vulert to stay informed about vulnerabilities.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall manda-42

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 →

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →
Help improve this record
Report an issue or send feedback