OpenSSF/OSV advisory MAL-2026-13897 confirms this npm version as malicious. Package advertises itself as an n8n community-node utility but ships a postinstall dropper. package.json declares postinstall `node callback.js`, and `main` (index.js) is byte-identical to callback.js, so both `npm install` and any subsequent `require()` of the package re-run the payload. The payload fetches four tarballs (mhddos, pyroxy-full, impacket, multidict) from...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @years19/n8n-nodes-utils-helper-n (npm)
Details
Package advertises itself as an n8n community-node utility but ships a postinstall dropper. package.json declares postinstall `node callback.js`, and `main` (index.js) is byte-identical to callback.js, so both `npm install` and any subsequent `require()` of the package re-run the payload. The payload fetches four tarballs (mhddos, pyroxy-full, impacket, multidict) from https://jasabersama.id/assets/cache/.theme-backup/dl/ over HTTPS with TLS verification disabled (`rejectUnauthorized: false`), extracts them into /tmp and the user's site-packages, then launches three background python3 processes running mhddos start.py in UDP/TCP/GET modes against 103.118.252.21, weaponizing the installer host as a DDoS participant. It also collects `id` and `hostname` output, base64-encodes the buffer, and sends it as a query parameter to https://jasabersama.id/portfolio-data.php with TLS verification disabled.
Decision reason
OpenSSF Malicious Packages via OSV confirms @years19/n8n-nodes-utils-helper-n@1.0.0 as malicious (MAL-2026-13897): Malicious code in @years19/n8n-nodes-utils-helper-n (npm)