Critical Malicious Code Vulnerability in cmskell Package

cmskell Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-17230: Malicious code in cmskell (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 Your last release was probably never penetration tested Manual testing by engineers who build software, not an auditor's checklist. Trusted by teams at Swift and Google Talk to Devnack

Background

The cmskell package is an npm library designed for managing and manipulating content management systems. It offers various functionalities that allow developers to streamline their workflows when dealing with CMS-related tasks. However, recent findings have revealed that this package contains malicious code, posing significant risks to users and their applications.

Vulnerability Detail

The vulnerability stems from the inclusion of malicious code within the cmskell package, which was introduced in version 0 and persists in all subsequent versions. This malicious code can lead to unauthorized access, data breaches, and potential exploitation of the systems utilizing this package. Users of cmskell are at risk of having their applications compromised, which could result in severe consequences, including loss of sensitive data and damage to reputation.

How To Fix

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

npm uninstall cmskell

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 workaround, you can avoid using the cmskell package until a secure version is released. Consider using alternative packages that provide similar functionalities without the associated risks.

Conclusion

The cmskell package has been identified as containing malicious code, posing significant risks to users. It is essential to remove this package from your projects and monitor for any updates or alternative solutions. Utilizing tools like Vulert can help in identifying vulnerabilities in your applications.

See every vulnerability recorded for cmskell →

Share this vulnerability

FAQ

cmskell is an npm library used for managing content management systems, providing various tools to enhance development workflows.

The malicious code can lead to unauthorized access and exploitation of systems using the cmskell package.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without any signup.

Immediately remove the cmskell package from your project and look for alternative solutions until a secure version is released.

As of now, there is no patched version available. It is recommended to monitor the official repository for updates.

How To Fix

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

npm uninstall cmskell

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