---
id: "MAL-2026-18701"
kind: "package"
aliases: ["MAL-2026-18701"]
title: "Malicious code in wxwxtt (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "wxwxtt", "fixed": [], "affected": "= 0.0.0; = 0.0.1; = 0.1.0; = 1.0.0; = 1.0.1; = 1.1.0; = 2.0.0; = 2.0.1; = 3.0.0; = 99.0.1", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-10-26T00:00:00+00:00"
first_seen_at: "2026-11-05T06:31:47+00:00"
updated_at: "2026-11-05T06:32:52+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-18701", "first_seen_at": "2026-11-05T06:31:47+00:00"}]
exploit_sources: []
---

# Malicious code in wxwxtt (npm)

## Affected

- npm:wxwxtt affected = 0.0.0; = 0.0.1; = 0.1.0; = 1.0.0; = 1.0.1; = 1.1.0; = 2.0.0; = 2.0.1; = 3.0.0; = 99.0.1 fixed no fixed version listed

## Timeline

- 2026-11-05T06:31:47+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-18701

## From the sources

wxwxtt is a dependency-confusion package (versions up to 99.0.1) from the same campaign as troubleshooting (MAL-2026-17641): a postinstall script runs beacon.cjs, which POSTs the installing host's name, install path and working directory to a hard-coded collector, and index.js, byte-identical to the troubleshooting payload (sha256 a86a4da763bbb34c16f361abe7aab66d5df591b66867ac8160041f932159b08d), does the same when imported.

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