Malicious Code Injection in seblakkuah33: A Threat to npm Ecosystem

seblakkuah33 Updated 18 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-108471: Malicious code in seblakkuah33 (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 Mobile apps built by Devnack Design, build and launch iOS and Android apps with a senior product team. From idea to store release Start a project

Background

The package seblakkuah33 is part of the npm ecosystem, which is widely used for JavaScript package management. It is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with malicious packages. These packages often contain scripts that manipulate package metadata and republish variants to inflate developer reputation scores, posing significant risks to developers and users alike.

Vulnerability Detail

The vulnerability in seblakkuah33 originates from its design to include malicious scripts that modify the package.json file. These scripts remove private flags, alter version numbers, and generate random package names, leading to the continuous republishing of these variants. This behavior not only pollutes the npm registry but also compromises the integrity of the packages, making it difficult for developers to trust the ecosystem. The malicious payload can lead to unauthorized access and exploitation of applications that rely on this package.

How To Fix

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

npm uninstall seblakkuah33

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, you can avoid using the seblakkuah33 package 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. You can check if your application is affected by this vulnerability using the Vulert playground at https://vulert.com/scanner without any signup.

Conclusion

The seblakkuah33 package poses a significant threat to the npm ecosystem due to its malicious code that manipulates package metadata. It is essential for developers to be vigilant and remove any affected packages from their projects. Utilizing tools like Vulert can help in monitoring for such vulnerabilities effectively.

See every vulnerability recorded for seblakkuah33 →

Share this vulnerability

FAQ

Seblakkuah33 is an npm package that has been identified as malicious, designed to manipulate package metadata and republish variants to inflate developer reputation scores.

The vulnerability can lead to the introduction of malicious code into your application, compromising its security and integrity.

You should uninstall the package immediately using 'npm uninstall seblakkuah33' and check for any alternative packages.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file.

Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without any signup.

How To Fix

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

npm uninstall seblakkuah33

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