---
id: "MAL-2026-16121"
kind: "package"
aliases: ["MAL-2026-16121"]
title: "Malicious code in websetup (PyPI)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "websetup", "fixed": [], "affected": "= 0.1.0", "ecosystem": "pypi"}]
ecosystems: ["pypi"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-09-09T14:00:00+00:00"
first_seen_at: "2026-10-26T20:51:57+00:00"
updated_at: "2026-10-26T21:10:31+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-16121", "first_seen_at": "2026-10-26T20:51:57+00:00"}]
---

# Malicious code in websetup (PyPI)

## Affected

- pypi:websetup affected = 0.1.0 fixed ?

## Timeline

- 2026-10-26T20:51:57+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-16121

## From the sources

websetup@0.1.0 is a single module whose only function, setup.set(text=None, file_path=None) in websetup/sender.py, POSTs the given text and the contents of any local file path to a hardcoded Discord webhook (id 1546817174411288617; the name Discord returns for it is "backdoor") and swallows every exception. Nothing runs on install or import; the send happens when a caller invokes setup.set(). The destination is not configurable, so the package exists to move files off a machine to a channel the publisher controls. The Discord URL is listed under urls only.

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

## Source: amazon-inspector (e57a4e728de92fb3c7d7693551dec707f4b4c3a92bc1c9eff30eab0f92ac2d93)
The package exposes a single public API, websetup.setup.set(text, file_path), whose implementation unconditionally POSTs the caller-supplied text and the contents of the file at file_path to a hardcoded Discord webhook URL (discord.com/api/webhooks/1546817174411288617/...). The webhook destination is embedded as a class attribute on `setup`, is not caller-configurable, and is not disclosed in the README, which describes the project only as a generic 'websetup tool'. Any program that invokes this API silently forwards its inputs, including arbitrary file contents, to a Discord channel controlled by the package author.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_