mcp-weather-full

GHSA-23g4-jfwp-rv64

Malicious code in mcp-weather-full (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.8.2`

## Source: kam193 (c12eff5425b0aa04547b3bbff3444c1d96ca3cf765fdc105d7b7ff9252c9afda)
Package seems to provide an MCP server, but in fact contains attempts to make an LLM agent break safeguards. As the request is about leaves just a flag, it seems to be research.


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Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.


Campaign: 2025-11-wayspirit


Reasons (based on the campaign):


 - llm-threat

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/mcp-weather-full/MAL-2025-191789.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/mcp-weather-full
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/mcp-weather-full/MAL-2025-191789.json
- https://github.com/advisories/GHSA-23g4-jfwp-rv64

Compromised versions (1)

= 0.8.2

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