npm

@years18/n8n-nodes-utils-helper-u @1.0.0

Vulnerability report · Last retrieved from osv.dev August 14, 2026 at 6:32 AM UTC

Malicious

OSV ID

MAL-2026-13865

Ecosystem

npm

Summary

The package's postinstall script (duplicated as the main module) runs unconditionally on npm install. It executes id and hostname , base64-encodes the output, and transmits it as a query-string parameter to a hardcoded HTTPS endpoint at jasabersama.id/portfolio-data.php with TLS certificate validation explicitly disabled (rejectUnauthorized: false). The same lifecycle hook installs the Python impacket package system-wide via pip --break-system-packages and invokes /tmp/mhddos/start.py , an MHDDoS attack launcher, weaponizing the installer host for outbound denial-of-service activity. The URL also carries a c= parameter conveying a shell command that decodes attacker-controlled bytes into /tmp/n8n_rce_result.txt , providing a command-staging channel back to the same remote endpoint.

Source: amazon-inspector (2e6a7fb247eadeb1f59c123721fdc49078bb1b723f80ed10f2a29c1c04eb04df)

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