Malicious Code Injection in long_leopard_0xrequest Package

long_leopard_0xrequest Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-105315: Malicious code in long_leopard_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 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 long_leopard_0xrequest package is part of the npm ecosystem, often utilized in JavaScript applications for making HTTP requests. However, this package has been identified as part of a malicious campaign that floods the npm registry with harmful packages designed to inflate developer reputation scores through automated publishing scripts. This vulnerability poses a significant risk to developers and users relying on this package for secure and reliable functionality.

Vulnerability Detail

The vulnerability originates from the long_leopard_0xrequest package, which is linked to a broader malicious campaign targeting npm. The package contains scripts that modify the package.json file to remove private flags, alter version numbers, and generate random package names. This behavior leads to the continuous republishing of variants, polluting the npm registry and potentially compromising the integrity of applications that depend on this package. The ramifications include exposure to further malicious code and the degradation of the npm ecosystem's reliability.

How To Fix

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

npm uninstall long_leopard_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 measure, you can avoid using the long_leopard_0xrequest package altogether and look for alternative packages that provide similar functionality without the associated risks. Additionally, you can monitor your dependencies using tools like Vulert, which can alert you to vulnerabilities in real-time without requiring code access.

Conclusion

The long_leopard_0xrequest package poses a significant security risk due to its malicious code injection capabilities. It is essential for developers to remove this package from their projects and monitor their dependencies for vulnerabilities. Utilizing tools like Vulert can enhance security by providing real-time alerts for open-source vulnerabilities.

See every vulnerability recorded for long_leopard_0xrequest →

Share this vulnerability

FAQ

It is an npm package used for making HTTP requests, but it has been identified as malicious.

It can lead to the introduction of malicious code, compromising your application's security and integrity.

Uninstall the package immediately and check your package-lock.json for any remnants.

Yes, tools like Vulert can monitor your dependencies and alert you to vulnerabilities in real-time.

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

How To Fix

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

npm uninstall long_leopard_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