mal-2026-375
Vulnerability from ossf_malicious_packages
Published
2026-01-20 19:06
Modified
2026-01-27 18:50
Summary
Malicious code in spellcheckerpy (PyPI)
Details

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

Source: kam193 (79cc4c6495567fe7659e9e4bb5964727bf95cfc9f78d32209937d73457bd476b)

Packages contain hidden code that is effectively run during importing or using the library, and downloads second stage code. Then, a process running in background periodically connects to a remote host and waits for the next code to execute.

The malicious code was in version 1.3.0, but the package itself was clearly uploaded with malclious intentions.


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

Campaign: 2025-11-spellcheckers

Reasons (based on the campaign):

  • obfuscation

  • Downloads and executes a remote malicious script.

  • The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.


{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "spellcheckerpy"
      },
      "versions": [
        "1.0.0",
        "1.1.0",
        "1.3.0"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "ANALYST"
    },
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    }
  ],
  "database_specific": {
    "iocs": {
      "domains": [
        "dothebest.store",
        "searchbox.info"
      ],
      "urls": [
        "https://dothebest.store/allow/inform.php",
        "https://dothebest.store/refresh.php",
        "https://searchbox.info/prefer.php"
      ]
    },
    "malicious-packages-origins": [
      {
        "id": "pypi/2025-11-spellcheckers/spellcheckerpy",
        "import_time": "2026-01-20T19:29:07.146029539Z",
        "modified_time": "2026-01-20T19:06:25.794768Z",
        "sha256": "2ffcd3e16661799d1a55e0d5e359ffd6fb883256310f280d6e0b88a5edb4e626",
        "source": "kam193",
        "versions": [
          "1.0.0",
          "1.1.0",
          "1.3.0"
        ]
      },
      {
        "id": "pypi/2025-11-spellcheckers/spellcheckerpy",
        "import_time": "2026-01-20T19:58:56.109232579Z",
        "modified_time": "2026-01-20T19:06:25.794768Z",
        "sha256": "79cc4c6495567fe7659e9e4bb5964727bf95cfc9f78d32209937d73457bd476b",
        "source": "kam193",
        "versions": [
          "1.0.0",
          "1.1.0",
          "1.3.0"
        ]
      },
      {
        "id": "pypi/2025-11-spellcheckers/spellcheckerpy",
        "import_time": "2026-01-27T18:48:13.385350639Z",
        "modified_time": "2026-01-20T19:06:25.794768Z",
        "sha256": "10bb96df7d43eff438bbe7a555c333f9e1d02f837ee3636dcbf9aa9e22175c48",
        "source": "kam193",
        "versions": [
          "1.0.0",
          "1.1.0",
          "1.3.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (79cc4c6495567fe7659e9e4bb5964727bf95cfc9f78d32209937d73457bd476b)\nPackages contain hidden code that is effectively run during importing or using the library, and downloads second stage code. Then, a process running in background periodically connects to a remote host and waits for the next code to execute.\n\nThe malicious code was in version 1.3.0, but the package itself was clearly uploaded with malclious intentions.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2025-11-spellcheckers\n\n\nReasons (based on the campaign):\n\n\n - obfuscation\n\n\n - Downloads and executes a remote malicious script.\n\n\n - The package contains code to execute remote commands (probably limited to a specific set) on the victim\u0027s machine.\n",
  "id": "MAL-2026-375",
  "modified": "2026-01-27T18:50:00Z",
  "published": "2026-01-20T19:06:25Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://helixguard.ai/blog/malicious-spellcheckers-2025-11-19"
    },
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/spellcheckerpy"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in spellcheckerpy (PyPI)"
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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