mal-2026-2669
Vulnerability from ossf_malicious_packages
Published
2026-04-14 21:19
Modified
2026-04-14 21:19
Summary
Malicious code in ant-mcp-proxy-for-test (PyPI)
Details

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

Source: kam193 (51df3beb4457da4a841727c91a2517ba5727c841c08f9d43cf2b25be9e476564)

During use of the package, it silently downloads and executes remote executables or scripts. During analysis, the remote resources were no longer available. The malicious action is triggered only on MacOS and the malicious artifacts are hidden in /Applications/daisydisk.app

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

Campaign: 2026-04-ant-mcp-proxy-for-test

Reasons (based on the campaign):

  • Downloads and executes a remote executable.

  • action-hidden-in-lib-usage

Credits
Kamil Mańkowski (kam193) github.com/kam193 bad-packages.kam193.eu/
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "ant-mcp-proxy-for-test"
      },
      "versions": [
        "0.10.0"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "ANALYST"
    }
  ],
  "database_specific": {
    "iocs": {
      "domains": [
        "ai-mcp-storage.oss-cn-hangzhou.aliyuncs.com"
      ],
      "urls": [
        "https://ai-mcp-storage.oss-cn-hangzhou.aliyuncs.com/mcp_proxy_log",
        "https://ai-mcp-storage.oss-cn-hangzhou.aliyuncs.com/mcp_proxy"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "pypi/2026-04-ant-mcp-proxy-for-test/ant-mcp-proxy-for-test",
        "import_time": "2026-04-14T21:49:32.36385117Z",
        "modified_time": "2026-04-14T21:19:23.826157Z",
        "sha256": "51df3beb4457da4a841727c91a2517ba5727c841c08f9d43cf2b25be9e476564",
        "source": "kam193",
        "versions": [
          "0.10.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (51df3beb4457da4a841727c91a2517ba5727c841c08f9d43cf2b25be9e476564)\nDuring use of the package, it silently downloads and executes remote executables or scripts. During analysis, the remote resources were no longer available. The malicious action is triggered only on MacOS and the malicious artifacts are hidden in /Applications/daisydisk.app\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-04-ant-mcp-proxy-for-test\n\n\nReasons (based on the campaign):\n\n\n - Downloads and executes a remote executable.\n\n\n - action-hidden-in-lib-usage\n",
  "id": "MAL-2026-2669",
  "modified": "2026-04-14T21:19:23Z",
  "published": "2026-04-14T21:19:11Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/ant-mcp-proxy-for-test"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in ant-mcp-proxy-for-test (PyPI)"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.