---
id: "MAL-2026-18605"
kind: "package"
aliases: ["MAL-2026-18605"]
title: "Malicious code in babyyodaa (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "babyyodaa", "fixed": [], "affected": "= 1.1.0", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-11-02T09:44:21+00:00"
first_seen_at: "2026-11-04T09:25:53+00:00"
updated_at: "2026-11-04T09:28:08+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-18605", "first_seen_at": "2026-11-04T09:25:53+00:00"}]
---

# Malicious code in babyyodaa (npm)

## Affected

- npm:babyyodaa affected = 1.1.0 fixed ?

## Timeline

- 2026-11-04T09:25:53+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-18605

## From the sources

Runs on install. The preinstall script marks a shell script bundled in the package as executable and runs it; the script contains a reverse-shell pattern, giving a remote party a shell on the installing machine. Version examined: 1.1.0; tarball SHA-256 8321ef8b36b40d9a5b5ba649e9ad4ec3bcbe18a9a484075c5e8e5e872ec0db0b.

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