---
id: "MAL-2026-18600"
kind: "package"
aliases: ["MAL-2026-18600"]
title: "Malicious code in @ubedsockets/baileys (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "@ubedsockets/baileys", "fixed": [], "affected": "all versions", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-11-02T15:50:08+00:00"
first_seen_at: "2026-11-04T06:25:04+00:00"
updated_at: "2026-11-04T06:40:32+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-18600", "first_seen_at": "2026-11-04T06:25:04+00:00"}]
---

# Malicious code in @ubedsockets/baileys (npm)

## Affected

- npm:@ubedsockets/baileys affected all versions fixed ?

## Timeline

- 2026-11-04T06:25:04+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-18600

## From the sources

Malicious package. `@ubedsockets/baileys` is a trojanized fork of the Baileys WhatsApp library (@whiskeysockets/baileys). On connection it issues an authenticated `w:mex` newsletter FOLLOW mutation (query_id 7871414976211147) that silently subscribes every victim to attacker-controlled WhatsApp channels — hardcoded newsletter JIDs: 120363410154606795@newsletter, 120363423295236859@newsletter. Legitimate Baileys never hardcodes a channel JID or auto-follows on connect; all published versions are malicious. Detected by wormsign static analysis of the injected channel-subscription code.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_