Malicious Code Injection in Defensive Jaguar 0xRequest Package

defensive_jaguar_0xrequest Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-101273: Malicious code in defensive_jaguar_0xrequest (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 Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

Background

The 'defensive_jaguar_0xrequest' package is part of the npm ecosystem, primarily used for various web development tasks. However, it has been identified as part of a malicious campaign that floods the npm registry with derivative packages. These packages are designed to inflate developer reputation scores through automated publishing scripts, leading to potential security risks for users.

Vulnerability Detail

The vulnerability in the 'defensive_jaguar_0xrequest' package originates from its association with the tea.xyz token reward campaign. This campaign utilizes malicious scripts that modify the package.json file to remove private flags, alter version numbers, and create random package names. The continuous republishing of these variants can pollute the npm registry, leading to potential security breaches and misuse of developer credentials.

How To Fix

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

npm uninstall defensive_jaguar_0xrequest

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 prevent the installation of this package by using the following command to uninstall it: 'npm uninstall defensive_jaguar_0xrequest'. Additionally, consider using a package-lock.json file to monitor dependencies and avoid malicious packages.

Conclusion

The 'defensive_jaguar_0xrequest' package poses significant security risks due to its malicious code designed to manipulate npm registry entries. It is essential to remove this package and stay vigilant about the packages you include in your projects to maintain security.

See every vulnerability recorded for defensive_jaguar_0xrequest →

Share this vulnerability

FAQ

The primary risk is the potential for malicious code execution that can compromise your application and inflate developer reputation scores fraudulently.

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

If you have installed the affected package, it is recommended to uninstall it immediately and check for any potential security breaches in your application.

Yes, tools like Vulert can help monitor your dependencies for vulnerabilities using just the package-lock.json file.

Regularly audit your dependencies, use tools like Vulert for monitoring, and ensure to only install packages from trusted sources.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

How To Fix

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

npm uninstall defensive_jaguar_0xrequest

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