---
id: "MAL-2026-19226"
page: "https://infrastack.ai/live/MAL-2026-19226"
kind: "package"
aliases: ["MAL-2026-19226"]
title: "Malicious code in quickgreet (npm)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "quickgreet", "fixed": [], "affected": "= 0.0.2", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-11-13T03:54:05+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-2026-19226", "first_seen_at": "2026-11-13T05:11:56+00:00"}]
exploit_sources: []
---

# Malicious code in quickgreet (npm)

Link for people: https://infrastack.ai/live/MAL-2026-19226 (this .md is for agents)

## Affected

- npm:quickgreet affected = 0.0.2 fixed no fixed version listed

## Timeline

- 2026-11-13T05:11:56+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-19226

## From the sources

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

## Source: amazon-inspector (430a8463ba4e5ea6b5dcb99d7410212773157b1c609d78b5a43bdf0cf9cd6c1b)
package.json declares a postinstall lifecycle script that runs an inline Node command reading os.hostname() and issuing an HTTP GET to <hostname>.<subdomain>.oast.fun. The oast.fun service is an out-of-band interaction / callback collector used to confirm code execution and enumerate reachable installer environments; the hostname is embedded in the DNS label so it is captured by the operator's interactsh listener. The script performs no build, native-compile, or install task — its sole effect is to exfiltrate an installer identifier to an attacker-controlled OOB endpoint on every npm install.

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