Critical Malicious Code Vulnerability in chanceutb Package

chanceutb Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-16779: Malicious code in chanceutb (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 chanceutb package is a JavaScript library available on npm, primarily used for generating random values and data. It is designed to assist developers in creating test data and enhancing applications with randomness. However, the package has been identified to contain malicious code, posing significant risks to applications that utilize it.

Vulnerability Detail

The vulnerability in the chanceutb package stems from the inclusion of malicious code that can compromise the security of applications using this library. This code may lead to unauthorized access, data breaches, or other harmful actions within the affected systems. The issue was introduced in version 0 and persists in all subsequent versions, making it critical for users to address this vulnerability promptly.

How To Fix

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

npm uninstall chanceutb

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

Currently, there are no specific workarounds to mitigate the risks posed by the malicious code in chanceutb. The safest approach is to uninstall the package entirely and replace it with a secure alternative.

Conclusion

The chanceutb package has been identified to contain malicious code that poses significant risks to applications. Users are strongly advised to uninstall the package and seek secure alternatives to protect their systems from potential threats.

See every vulnerability recorded for chanceutb →

Share this vulnerability

FAQ

chanceutb is a JavaScript library used for generating random values and data, primarily for testing purposes.

The malicious code can lead to unauthorized access and potential data breaches in applications that utilize the package.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Simply upload your package-lock.json file to check for vulnerabilities.

As of now, there is no patched version available. Users are advised to uninstall the package immediately.

You should uninstall the chanceutb package and replace it with a secure alternative to ensure your application's safety.

How To Fix

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

npm uninstall chanceutb

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