---
id: "MAL-2026-18989"
page: "https://infrastack.ai/live/MAL-2026-18989"
kind: "package"
aliases: ["MAL-2026-18989"]
title: "Malicious code in malvin-wa (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "malvin-wa", "fixed": [], "affected": "= 0.1.0; = 0.1.1", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-10-27T00:00:00+00:00"
first_seen_at: "2026-11-09T23:38:06+00:00"
updated_at: "2026-11-09T23:45:47+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-18989", "first_seen_at": "2026-11-09T23:38:06+00:00"}]
exploit_sources: []
---

# Malicious code in malvin-wa (npm)

Link for people: https://infrastack.ai/live/MAL-2026-18989 (this .md is for agents)

## Affected

- npm:malvin-wa affected = 0.1.0; = 0.1.1 fixed no fixed version listed

## Timeline

- 2026-11-09T23:38:06+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-18989

## From the sources

malvin-wa is a fork of the Baileys WhatsApp Web library that silently subscribes the installer's own WhatsApp account to WhatsApp Channels chosen by the publisher. When the socket connects, code in lib/Socket/newsletter.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363397787532298@newsletter, 120363401425960788@newsletter, 120363401712599053@newsletter, 120363402984117316@newsletter, 120363403088190386@newsletter, 120363403341539432@newsletter and 1 more, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_