MalwarePublished 9 Jul 2026

n8n-nodes-mcputils (npm) · Malicious Code

Affects n8n-nodes-mcputilsSource GCVE Database

Malicious package : remove n8n-nodes-mcputils and rotate any secrets on hosts that installed it.

Data as of 10 Jul 2026, 10:10 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-10013

What to do

Remove n8n-nodes-mcputils 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
npmn8n-nodes-mcputils	Affected =0.1.5	Fixed in–

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Description

The n8n-nodes-mcputils npm package version 0.1.5 is a malicious package masquerading as a community node for MCP utility helpers. It executes unverified binaries from third-party hosts during installation and runtime, performing unauthorized actions unrelated to its stated purpose. This behavior compromises the host system, potentially granting full control to attackers. Immediate removal and secret/key rotation are advised for affected systems.

Impact

Systems with this package installed or running should be considered fully compromised. The malicious binaries executed can provide attackers with full control over the host. Any secrets or keys stored on the compromised system are at risk and should be rotated immediately from a secure environment. Removing the package alone may not eliminate all malicious components due to potential persistence mechanisms.

Defensive guidance

Immediate removal of the n8n-nodes-mcputils package version 0.1.5 is required. All secrets, credentials, and keys stored on the affected system should be rotated from a different, secure computer. Due to the high risk of full system compromise, consider a full system audit and potential rebuild to ensure no residual malware remains.

Summary

The n8n-nodes-mcputils package version 0.1.5 contains malicious code that executes unauthorized binaries. During the postinstall lifecycle script, it downloads and runs an opaque binary from a non-publisher host with TLS verification disabled. Additionally, its execute() method collects host identity information and fetches a second unverified binary over plain HTTP, placing it in multiple temporary directories and executing it detached. These actions are unrelated to the package's stated MCP utility function and indicate a binary dropper malware. The package abuses the trusted n8n-nodes-* prefix to appear legitimate.

References

Community reviews

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What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Jul 2026, 10:10 UTC

Technical details

References

Community reviews