---
id: "MAL-2026-19149"
page: "https://infrastack.ai/live/MAL-2026-19149"
kind: "package"
aliases: ["MAL-2026-19149"]
title: "Malicious code in superlib_ex3 (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "superlib_ex3", "note": "all versions", "fixed": [], "affected": "", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-11-08T01:30:00+00:00"
first_seen_at: "2026-11-12T05:46:09+00:00"
updated_at: "2026-11-12T05:48:12+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-19149", "first_seen_at": "2026-11-12T05:46:09+00:00"}]
exploit_sources: []
---

# Malicious code in superlib_ex3 (npm)

Link for people: https://infrastack.ai/live/MAL-2026-19149 (this .md is for agents)

## Affected

- npm:superlib_ex3 affected range not listed fixed no fixed version listed

## Timeline

- 2026-11-12T05:46:09+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-19149

## From the sources

Malicious package. `superlib_ex3` is a multi-stage loader: on install it fetches and executes a second-stage payload from the attacker-controlled host `x.exxcube.fr` (the install hook was observed in dynamic detonation retrieving `https://x.exxcube.fr/postInstall`). No legitimate functionality; all published versions are malicious. Full indicators at the reference below.

---

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