---
id: "MAL-2026-18372"
kind: "package"
aliases: ["MAL-2026-18372"]
title: "Malicious code in @zmtcdn/components (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "@zmtcdn/components", "fixed": [], "affected": "= 9999.0.0", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-10-28T09:59:37+00:00"
first_seen_at: "2026-10-29T09:53:35+00:00"
updated_at: "2026-10-29T09:56:48+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-18372", "first_seen_at": "2026-10-29T09:53:35+00:00"}]
---

# Malicious code in @zmtcdn/components (npm)

## Affected

- npm:@zmtcdn/components affected = 9999.0.0 fixed ?

## Timeline

- 2026-10-29T09:53:35+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-18372

## From the sources

@zmtcdn/components@9999.0.0 is a dependency-confusion package with an empty `index.js` and a description of "Security research PoC". Its postinstall script runs `node postinstall.js` on npm install, which POSTs the hostname, username, platform, working directory and the names of all environment variables to `https://webhook.site/f52af355-4783-4acb-9de1-5e44b5963025`. It was published by the npm account kill_shs, which also published @zmtcdn/ui with the same script.

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