n8n-nodes-port-scannernpm
Advisory published Updated
n8n-nodes-port-scanner is a confirmed malicious npm package (MAL-2026-10998) that opens a backdoor for remote access (malicious versions 1.0.0, 1.0.1, 1.0.2). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in n8n-nodes-port-scanner (npm)
What this malware does
index.js executes a top-level IIFE at require-time that (1) runs hostname, hostname -I, id, ip route, ip neigh/arp and reads /etc/resolv.conf, opens a raw TCP socket to 103.27.109.184:8893, and writes the collected host identity and network configuration to that remote host; (2) spawns /bin/bash -i and pipes its stdin/stdout/stderr over a second TCP connection to 103.27.109.184:8893, granting the remote party an interactive shell on the installer's machine; and (3) enumerates internal subnets 172.17.0.0/24, 172.18.0.0/24, and 10.200.37.0/24 across ports 22, 80, 443, 3000, 5678, 8080, and 8443, including the open-port results in the exfil payload. The scanning behavior runs unconditionally when the module is loaded, against private networks the installer has not designated as targets, and its results are shipped to the same hardcoded bare-IP endpoint — the package's advertised 'port scanner' purpose is a cover for installer-side reconnaissance and remote access, not an operator-invoked pentest tool.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Search your lockfiles and build artifacts for n8n-nodes-port-scanner (3 malicious versions).
If you installed it — respond
n8n-nodes-port-scanner establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If n8n-nodes-port-scanner was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks n8n-nodes-port-scanner-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.