MAL-2026-17471
Vulnerability from ossf_malicious_packages
Published
2026-10-03 19:41
Modified
2026-10-04 23:42
Summary
Malicious code in caoxiltts (PyPI)
Details

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

Source: amazon-inspector (23b18de964968b1d4f9333a1bcc5f247b3978f9fdc418f01f7e9a3c7bc578a62)

The package advertises itself as a TTS inference helper but harness.run() downloads two gzipped ELF binaries from a configurable host, verifies them against author-pinned SHA256 hashes, writes them to /tmp/.caoxiltts, chmods 0755, and executes them. The 'inference-core' binary is launched with a JSON configuration whose schema (pools[].url/user/pass/keepalive/tls, cpu.threads, mem-locked, cache-budget, autosave) is the XMRig cryptominer configuration shape, not a text-to-speech inference worker. The second binary 'edge-connector' is invoked as access tcp --hostname <edge> --url 127.0.0.1:<port>, matching the Cloudflare Access/cloudflared tunnel CLI shape, exposing a local port outbound through an author-controlled edge. The author-pinned hashes mean the exact bytes executed on the installer's host are chosen by the publisher, and the config/invocation pattern contradicts the package's declared TTS purpose. A supporting _report() helper additionally POSTs run_id, run state, and up to 4000 characters of exception tracebacks (which can carry local path and environment details) to https:///hb on the same host serving the dropped binaries.

Source: kam193 (c0d27d780e356c6ae75dedaa144f2064476e275a02f801a1d56897a3a9d1930f)

The package imitates real activity and instead deploys a coin miner.


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

Campaign: 2026-10-voxeval

Reasons (based on the campaign):

  • cryptominer
CWE
  • CWE-506 - The product contains code that appears to be malicious in nature.
  • CWE-506 - The product contains code that appears to be malicious in nature.

{
  "affected": [
    {
      "database_specific": {
        "cwes": [
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          },
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          }
        ],
        "indicators": {
          "evidence_files": [
            {
              "path": "caoxiltts/__init__.py",
              "sha256": "aa0409606f6902264198907cfc236fd6b80b8cf22d97b706cdc083b4d15c9089",
              "tlsh": "9a42a5a2cd211d6383538a564963e952b70ab98757091830bdec831c2f69674c2f6fff"
            }
          ],
          "package_integrity": [
            {
              "filename": "caoxiltts-0.1.0-py3-none-any.whl",
              "hashes": {
                "blake2b_256": "73e9fb430a6a17cd7d247eaadff048336f05e012c338821a8302d1070f024a5f",
                "md5": "066ae0db0409cb0c8b73e28e9843eb77",
                "sha256": "52b1d16be3eaedbc1d2eb45bed547819c95da4eabebac3e564e30dafcda155ad"
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "caoxiltts"
      },
      "versions": [
        "0.1.0",
        "0.1.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    },
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "pypi/2026-10-voxeval/caoxiltts",
        "import_time": "2026-10-03T20:22:43.251097267Z",
        "modified_time": "2026-10-03T19:41:50.061768Z",
        "sha256": "c0d27d780e356c6ae75dedaa144f2064476e275a02f801a1d56897a3a9d1930f",
        "source": "kam193",
        "versions": [
          "0.1.0",
          "0.1.1"
        ]
      },
      {
        "id": "IN-MAL-2026-020901",
        "import_time": "2026-10-04T23:40:39.993302728Z",
        "modified_time": "2026-10-04T23:16:54Z",
        "sha256": "819b8ae45e8f696b31aa78bf56a0a51b85b4612be1bfec9c5fbe2fb5452e4f3e",
        "source": "amazon-inspector",
        "versions": [
          "0.1.0"
        ]
      },
      {
        "id": "IN-MAL-2026-020898",
        "import_time": "2026-10-04T23:40:39.67888865Z",
        "modified_time": "2026-10-04T23:16:24Z",
        "sha256": "23b18de964968b1d4f9333a1bcc5f247b3978f9fdc418f01f7e9a3c7bc578a62",
        "source": "amazon-inspector",
        "versions": [
          "0.1.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (23b18de964968b1d4f9333a1bcc5f247b3978f9fdc418f01f7e9a3c7bc578a62)\nThe package advertises itself as a TTS inference helper but harness.run() downloads two gzipped ELF binaries from a configurable host, verifies them against author-pinned SHA256 hashes, writes them to /tmp/.caoxiltts, chmods 0755, and executes them. The \u0027inference-core\u0027 binary is launched with a JSON configuration whose schema (pools[].url/user/pass/keepalive/tls, cpu.threads, mem-locked, cache-budget, autosave) is the XMRig cryptominer configuration shape, not a text-to-speech inference worker. The second binary \u0027edge-connector\u0027 is invoked as `access tcp --hostname \u003cedge\u003e --url 127.0.0.1:\u003cport\u003e`, matching the Cloudflare Access/cloudflared tunnel CLI shape, exposing a local port outbound through an author-controlled edge. The author-pinned hashes mean the exact bytes executed on the installer\u0027s host are chosen by the publisher, and the config/invocation pattern contradicts the package\u0027s declared TTS purpose. A supporting _report() helper additionally POSTs run_id, run state, and up to 4000 characters of exception tracebacks (which can carry local path and environment details) to https://\u003cstore\u003e/hb on the same host serving the dropped binaries.\n\n## Source: kam193 (c0d27d780e356c6ae75dedaa144f2064476e275a02f801a1d56897a3a9d1930f)\nThe package imitates real activity and instead deploys a coin miner.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-10-voxeval\n\n\nReasons (based on the campaign):\n\n\n - cryptominer\n",
  "id": "MAL-2026-17471",
  "modified": "2026-10-04T23:42:41.355250539Z",
  "published": "2026-10-03T19:41:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/caoxiltts"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/caoxiltts/0.1.0/"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/caoxiltts/0.1.1/"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in caoxiltts (PyPI)"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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