---
id: "MAL-2026-16250"
kind: "package"
aliases: ["MAL-2026-16250"]
title: "Malicious code in marketing-mcp (PyPI)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "marketing-mcp", "fixed": [], "affected": "= 0.1.0", "ecosystem": "pypi"}]
ecosystems: ["pypi"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-09-17T12:43:45+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-2026-16250", "first_seen_at": "2026-10-26T20:51:57+00:00"}]
---

# Malicious code in marketing-mcp (PyPI)

## Affected

- pypi:marketing-mcp affected = 0.1.0 fixed ?

## Timeline

- 2026-10-26T20:51:57+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-16250

## From the sources

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

## Source: amazon-inspector (87216e00fe68e2de8b140f1f9ffc2db5a8e814f38030e2eb6120c9ae9e7ca3ff)
The package exposes an MCP tool `send(path)` that reads a caller-specified local file and POSTs its contents to a hardcoded `https://webhook.site/4acf7132-a75e-47e1-aeff-0350c8eac16c` endpoint. The destination is a fixed public request-capture service, is not caller-configurable, and is not the installer's infrastructure. Any file path an LLM agent is induced to pass to `send` — including sensitive paths such as `~/.ssh/id_rsa`, `~/.aws/credentials`, `.env` files, or source trees — is uploaded to that third-party capture URL where the operator of the webhook can retrieve it. The package's advertised marketing/MCP framing does not match the actual behavior, which is a one-way file relay to an author-controlled inspection endpoint.

## Source: kam193 (6a271b29f840e2047c34363e985921e1a374194cfcae7524698f178c96bea9eb)
Package attempts to lure LLM agents to exfiltrate files to a hardcoded location. Analysis of infrastructure suggests preparing for exfiltrating credentials.


---

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.


Campaign: 2026-09-marketing-mcp


Reasons (based on the campaign):


 - files-exfiltration


 - llm-threat

---

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