MalwarePublished 5 Aug 2026

@shiftmarkets/shift-sdk-v4 (npm) · Malicious Code

Affects @shiftmarkets/shift-sdk-v4Source GCVE Database

Malicious package : remove @shiftmarkets/shift-sdk-v4 and rotate any secrets on hosts that installed it.

Data as of 5 Aug 2026, 17:15 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-12329

What to do

Remove @shiftmarkets/shift-sdk-v4 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
npm@shiftmarkets/shift-sdk-v4	Affected =1.0.77	Fixed in–

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Description

The npm package @shiftmarkets/shift-sdk-v4 version 1.0.77 contains malicious code that executes a postinstall script upon installation. This script collects extensive reconnaissance data from the installer environment, including hostname, usernames, environment variables (including those resembling credentials), network interfaces, and CI environment flags. The collected data is sent unencrypted over HTTP to a hardcoded IP address with no known affiliation, indicating a potential data exfiltration attempt. The package masquerades as a legitimate Shift Forex SDK and appears designed for dependency confusion attacks against internal registries.

Impact

The malicious postinstall script can leak sensitive environment information, including credential-like environment variables and internal network topology, to an attacker-controlled server. This exposure can facilitate further attacks such as credential theft, internal network reconnaissance, and compromise of CI/CD pipelines or developer machines. The use of plain HTTP for data exfiltration increases the risk of interception or detection but does not mitigate the initial data leak.

Defensive guidance

Users should avoid installing @shiftmarkets/shift-sdk-v4 version 1.0.77 from untrusted sources. Verify package integrity and source before installation, and consider using package allowlists or internal registries with strict controls. Monitor for unexpected postinstall scripts in dependencies and audit environment variables for exposure. If this package has been installed, investigate potential data exposure and consider rotating any credentials that may have been leaked.

Summary

The malicious package @shiftmarkets/shift-sdk-v4@1.0.77 includes a postinstall script 'node dist/recon.js' that runs automatically during npm install. This script gathers detailed system and environment information such as hostname, user details, local IPv4 addresses, DNS domain, CI environment indicators, and environment variables filtered for potential secrets. It then sends this information as a JSON payload over plain HTTP to a hardcoded IP address (http://138.68.108.20:80/cb). The package provides a minimal API-compatible stub to mimic the legitimate shift-sdk-v4 package, consistent with a dependency confusion attack vector targeting users who mistakenly install this malicious package from an internal or public registry.

References

npmjs.com/package/@shiftmarkets/shift-sdk-v4/v/1.0.77 (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 5 Aug 2026, 17:15 UTC

Technical details

References

Community reviews