Critical Malicious Code Vulnerability in csvsub Package

csvsub Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-17808: Malicious code in csvsub (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 csvsub package is a Node.js library designed for CSV file manipulation, allowing users to easily convert and manage CSV data. It is widely used in various applications for data processing tasks. However, the package has been identified to contain malicious code, posing significant security risks to users and their applications.

Vulnerability Detail

The vulnerability in the csvsub package originates from the inclusion of malicious code that can compromise the security of applications utilizing this package. This code may lead to unauthorized access, data breaches, or other harmful actions within the affected systems. Users are at risk of having their data manipulated or exposed due to this vulnerability, making it critical to address immediately.

How To Fix

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

npm uninstall csvsub

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, users can remove the csvsub package from their project until a secure version is released. This can be done by executing the command: 'npm uninstall csvsub'. Consider using alternative packages for CSV manipulation in the meantime.

Conclusion

The csvsub package has been identified to contain malicious code, posing significant risks to users and their applications. It is crucial to update or remove the package to mitigate these risks. Users are encouraged to utilize tools like Vulert to monitor their applications for vulnerabilities.

See every vulnerability recorded for csvsub →

Share this vulnerability

FAQ

The csvsub package is used for manipulating and processing CSV files in Node.js applications.

You can check if your application is affected by using Vulert, which monitors and alerts for open-source vulnerabilities. Visit Vulert Scanner to use the Vulert playground without any signup.

If you cannot update the package right away, it is recommended to uninstall it and use alternative libraries for CSV processing until a secure version is available.

Using the compromised csvsub package can lead to unauthorized access to your application, data breaches, and potential manipulation of sensitive information.

As of now, a patched version has not been specified. Users should monitor the package repository for updates and apply them as soon as they are released.

How To Fix

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

npm uninstall csvsub

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