MalwarePublished 12 Jun 2026Updated 1 Sep 2026

voyager-web (npm) · Malicious Code

Affects voyager-webSource GCVE Database

Malicious package : remove voyager-web and rotate any secrets on hosts that installed it.

Data as of 12 Sep 2026, 19:47 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-5696

What to do

Remove voyager-web from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmvoyager-web	Affected =999.0.0	Fixed in–

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Description

The npm package 'voyager-web' version 999.0.0 is a malicious typosquatting package that executes code during installation to exfiltrate sensitive host and CI environment information to an attacker-controlled Discord webhook. It collects system identifiers and CI secrets and sends them without consent. This package is a proof-of-concept for dependency confusion attacks but results in full compromise of any system where it is installed.

Impact

Any system that installs this package is considered fully compromised due to automatic exfiltration of sensitive host and CI environment data, including secrets and credentials. This can lead to unauthorized access and further compromise of infrastructure. The presence of this package implies that all secrets and keys on the affected system should be rotated immediately. Removal of the package alone does not guarantee remediation as the attacker may have established persistent control.

Defensive guidance

Remove the malicious 'voyager-web' package version 999.0.0 immediately. Rotate all secrets and credentials that may have been exposed, preferably from a secure, unaffected system. Since this package is a proof-of-concept for dependency confusion attacks, review and harden supply chain security practices to prevent installation of typosquatting or malicious packages.

Summary

The malicious 'voyager-web' npm package version 999.0.0 contains preinstall and postinstall lifecycle hooks that run a script (callback.js) during npm install. This script gathers host identifiers (hostname, username, user IDs, home directory, platform, current working directory, local and external IP addresses, Node version, package name) and continuous integration environment variables (such as GITHUB_TOKEN, AWS_ACCESS_KEY_ID, NPM_TOKEN, GITHUB_REPOSITORY, GITHUB_ACTOR, JENKINS_URL). It then exfiltrates this data via HTTP POST to a hardcoded Discord webhook URL and has a DNS-based fallback exfiltration method. The package name is a typo-squatting variant of the legitimate 'voyager-web' package from Reddit, and the version 999.0.0 is a known version used to override internal/private packages in dependency confusion attacks. The effect is automatic and silent exfiltration of sensitive data from any system that installs this package.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 12 Sep 2026, 19:47 UTC

Technical details

References

Community reviews