Malicious Code Detected in launchdarkly-cpp-networking Package

launchdarkly-cpp-networking Updated 02 Feb 2026

Summary

02/02/2026
CRITICAL
No i
Critical
Not published

MAL-2026-637: Malicious code in launchdarkly-cpp-networking (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 MarkAI Find prospects already talking about the problem you solve AI watches the communities your customers use to find qualified prospects, then alerts you when a conversation is worth joining. See MarkAI

Background

The launchdarkly-cpp-networking package is a library designed for C++ applications to integrate with LaunchDarkly's feature flagging service. It allows developers to manage feature flags and experiment with new features in a controlled manner. However, this package has been identified to contain malicious code, posing a significant risk to applications that utilize it.

Vulnerability Detail

The vulnerability originates from the discovery of malicious code embedded within the launchdarkly-cpp-networking package. This code can potentially compromise the security of applications using this package, leading to unauthorized access, data breaches, or other malicious activities. The specific technical details of the malicious code have not been disclosed, but its presence in the package indicates a severe risk to users.

How To Fix

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

npm uninstall launchdarkly-cpp-networking

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, consider removing the launchdarkly-cpp-networking package from your project until a secure version is released. You can do this by running the following command:

npm uninstall launchdarkly-cpp-networking

This will prevent any potential exploitation of the malicious code while you await a fix.

Conclusion

The launchdarkly-cpp-networking package has been found to contain malicious code, posing a significant risk to applications that utilize it. Users are advised to update or remove the package to mitigate potential security threats. Monitoring tools like Vulert can assist in identifying vulnerabilities in your software.

See every vulnerability recorded for launchdarkly-cpp-networking →

Share this vulnerability

FAQ

It is a C++ library used for integrating with LaunchDarkly's feature flagging service, allowing developers to manage feature flags in their applications.

The malicious code was identified through an analysis conducted by Amazon Inspector, which flagged the package for containing harmful code.

Using the compromised package can lead to unauthorized access, data breaches, and other security vulnerabilities in your application.

You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities in your software. It requires only the package-lock.json file for analysis.

Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without needing to sign up.

How To Fix

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

npm uninstall launchdarkly-cpp-networking

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