---
id: "MAL-2026-19223"
page: "https://infrastack.ai/live/MAL-2026-19223"
kind: "package"
aliases: ["MAL-2026-19223"]
title: "Malicious code in curse-allies-module (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "curse-allies-module", "fixed": [], "affected": "= 1.0.0", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-11-13T03:55:32+00:00"
first_seen_at: "2026-11-13T05:11:56+00:00"
updated_at: "2026-11-13T05:14:00+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-19223", "first_seen_at": "2026-11-13T05:11:56+00:00"}]
exploit_sources: []
---

# Malicious code in curse-allies-module (npm)

Link for people: https://infrastack.ai/live/MAL-2026-19223 (this .md is for agents)

## Affected

- npm:curse-allies-module affected = 1.0.0 fixed no fixed version listed

## Timeline

- 2026-11-13T05:11:56+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-19223

## From the sources

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_-= Per source details. Do not edit below this line.=-_

## Source: amazon-inspector (15e9740e7be22c3d68a1784e48d3e87414347b5e5697397ef0d8ab2295619962)
On npm install, the package runs a postinstall lifecycle script (`node probe.cjs`) that issues an HTTPS POST to a hardcoded webhook.site collector URL (https://webhook.site/a4bf0f9f-6d96-46e6-80ac-b76a5329f481) with the marker string `CURSE_DEPENDENT_REMOTE_INSTALL_PROBE`. The beacon fires unconditionally at install time with no configuration or opt-out, signaling to a third-party collector that the package resolved and executed inside the installer's environment. This is the canonical dependency-confusion / reconnaissance canary shape: the attacker learns that a given name resolves on the target's internal build infrastructure, enabling follow-on targeted attacks against environments where the name was expected to resolve privately.

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