mal-2025-191789
Vulnerability from ossf_malicious_packages
Published
2025-11-06 08:46
Modified
2025-12-31 02:45
Summary
Malicious code in mcp-weather-full (PyPI)
Details
-= Per source details. Do not edit below this line.=-
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.
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
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "mcp-weather-full"
},
"versions": [
"0.8.2",
"0.8.1",
"0.8.0",
"0.8.3",
"0.8.4",
"0.8.5",
"0.8.6",
"0.8.7",
"0.8.8",
"0.8.9",
"0.9.0",
"0.9.1",
"0.9.2",
"0.9.3",
"0.9.4",
"0.9.5",
"0.9.6",
"1.0.0",
"1.0.1"
]
}
],
"credits": [
{
"contact": [
"https://github.com/kam193",
"https://bad-packages.kam193.eu/"
],
"name": "Kamil Ma\u0144kowski (kam193)"
},
{
"contact": [
"https://github.com/kam193",
"https://bad-packages.kam193.eu/"
],
"name": "Kamil Ma\u0144kowski (kam193)",
"type": "REPORTER"
}
],
"database_specific": {
"malicious-packages-origins": [
{
"id": "pypi/2025-11-wayspirit/mcp-weather-full",
"import_time": "2025-12-02T22:30:56.203369145Z",
"modified_time": "2025-11-09T09:25:21.922098Z",
"sha256": "88126ddb21009fa1a3aedab5db740fd059efb093047fe914a90a2036c5161ed3",
"source": "kam193",
"versions": [
"0.8.2",
"0.8.1",
"0.8.0",
"0.8.3",
"0.8.4",
"0.8.5",
"0.8.6",
"0.8.7",
"0.8.8",
"0.8.9",
"0.9.0",
"0.9.1",
"0.9.2",
"0.9.3",
"0.9.4",
"0.9.5",
"0.9.6",
"1.0.0",
"1.0.1"
]
},
{
"id": "pypi/2025-11-wayspirit/mcp-weather-full",
"import_time": "2025-12-02T23:07:19.385263762Z",
"modified_time": "2025-11-09T09:25:21.922098Z",
"sha256": "c12eff5425b0aa04547b3bbff3444c1d96ca3cf765fdc105d7b7ff9252c9afda",
"source": "kam193",
"versions": [
"0.8.2",
"0.8.1",
"0.8.0",
"0.8.3",
"0.8.4",
"0.8.5",
"0.8.6",
"0.8.7",
"0.8.8",
"0.8.9",
"0.9.0",
"0.9.1",
"0.9.2",
"0.9.3",
"0.9.4",
"0.9.5",
"0.9.6",
"1.0.0",
"1.0.1"
]
},
{
"id": "pypi/2025-11-wayspirit/mcp-weather-full",
"import_time": "2025-12-30T22:39:04.311812128Z",
"modified_time": "2025-11-09T09:25:21.922098Z",
"sha256": "f51a214634cbcfaaf12d990053293981c0a2e4e1093cdc0b343c8c9dc85a2c49",
"source": "kam193",
"versions": [
"0.8.0",
"0.8.1",
"0.8.2",
"0.8.3",
"0.8.4",
"0.8.5",
"0.8.6",
"0.8.7",
"0.8.8",
"0.8.9",
"0.9.0",
"0.9.1",
"0.9.2",
"0.9.3",
"0.9.4",
"0.9.5",
"0.9.6",
"1.0.0",
"1.0.1"
]
}
]
},
"details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (c12eff5425b0aa04547b3bbff3444c1d96ca3cf765fdc105d7b7ff9252c9afda)\nPackage 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.\n\n\n---\n\nCategory: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research \u0026 co, with clearly low-harm possibilities.\n\n\nCampaign: 2025-11-wayspirit\n\n\nReasons (based on the campaign):\n\n\n - llm-threat\n",
"id": "MAL-2025-191789",
"modified": "2025-12-31T02:45:15Z",
"published": "2025-11-06T08:46:54Z",
"references": [
{
"type": "WEB",
"url": "https://bad-packages.kam193.eu/pypi/package/mcp-weather-full"
}
],
"schema_version": "1.7.4",
"summary": "Malicious code in mcp-weather-full (PyPI)"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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