---
id: "MAL-2026-18683"
kind: "package"
aliases: ["MAL-2026-18683"]
title: "Malicious code in @zaxius/baileys (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "@zaxius/baileys", "fixed": [], "affected": "= 1.0.1", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-10-26T00:00:00+00:00"
first_seen_at: "2026-11-05T06:31:45+00:00"
updated_at: "2026-11-05T06:32:52+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-18683", "first_seen_at": "2026-11-05T06:31:45+00:00"}]
exploit_sources: []
---

# Malicious code in @zaxius/baileys (npm)

## Affected

- npm:@zaxius/baileys affected = 1.0.1 fixed no fixed version listed

## Timeline

- 2026-11-05T06:31:45+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-18683

## From the sources

@zaxius/baileys 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) , using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

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