Malicious Code Injection in tusaaya-s-ters: A Threat to npm Ecosystem

tusaaya-s-ters Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-169384: Malicious code in tusaaya-s-ters (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

The package 'tusaaya-s-ters' is part of the npm ecosystem, which is widely used for JavaScript package management. This package is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with malicious packages. The primary function of such packages is to manipulate developer reputation scores through automated publishing scripts, leading to potential security risks for users and developers alike.

Vulnerability Detail

The vulnerability in 'tusaaya-s-ters' stems from its malicious code that modifies the package.json file to remove private flags and alters version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This behavior not only compromises the integrity of the npm ecosystem but also poses risks to developers who may unknowingly use these compromised packages in their applications.

How To Fix

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

npm uninstall tusaaya-s-ters

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 'tusaaya-s-ters' package and monitor your project's dependencies for any malicious packages. You can also use tools like Vulert to check your package-lock.json for vulnerabilities without needing to install any software. Visit the Vulert playground at https://vulert.com/scanner to assess your application's vulnerability status.

Conclusion

The 'tusaaya-s-ters' package poses a significant threat to the npm ecosystem due to its malicious code designed to manipulate package integrity. It is essential for developers to remain vigilant, regularly check their dependencies, and utilize tools like Vulert to ensure their applications are secure from such vulnerabilities.

See every vulnerability recorded for tusaaya-s-ters →

Share this vulnerability

FAQ

The tusaaya-s-ters package contains malicious code that modifies project files and floods the npm registry with compromised packages.

You can check your package-lock.json file using Vulert, which provides real-time monitoring for open-source vulnerabilities.

Immediately uninstall the package using 'npm uninstall tusaaya-s-ters' and check for any dependencies that may be affected.

Yes, tools like Vulert can monitor your dependencies and alert you to any open-source vulnerabilities in real-time.

Using compromised packages can lead to security breaches, data loss, and damage to your application's reputation.

How To Fix

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

npm uninstall tusaaya-s-ters

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