marketing-mcp

GHSA-7m86-6729-5w7h

Malicious code in marketing-mcp (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## 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.


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


Campaign: 2026-09-marketing-mcp


Reasons (based on the campaign):


 - files-exfiltration


 - llm-threat

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/81a689cc43ac8a37a167483c54682c42d0c807bd/osv/malicious/pypi/marketing-mcp/MAL-2026-16250.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/marketing-mcp
- https://github.com/ossf/malicious-packages/blob/81a689cc43ac8a37a167483c54682c42d0c807bd/osv/malicious/pypi/marketing-mcp/MAL-2026-16250.json
- https://pypi.org/project/marketing-mcp/0.1.0
- https://github.com/advisories/GHSA-7m86-6729-5w7h

Compromised versions (1)

= 0.1.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.