mal-2026-1295
Vulnerability from ossf_malicious_packages
Published
2026-03-09 17:26
Modified
2026-03-12 00:30
Summary
Malicious code in tabformerlite (PyPI)
Details

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

Source: kam193 (24a23931f60d9a2daf27a6df2eff2f3102cb239f6d058bed6646d208787f0c5b)

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.


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: GENERIC-standard-pypi-install-pentest

Reasons (based on the campaign):

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

  • The package overrides the install command in setup.py to execute malicious code during installation.

Source: ossf-package-analysis (1bb9649abbc3c57b35f0f247886a0b50587f752f3cf5707db3a57e85502d40f2)

The OpenSSF Package Analysis project identified 'tabformerlite' @ 99.0.0 (pypi) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "tabformerlite"
      },
      "versions": [
        "99.0.0"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "REPORTER"
    },
    {
      "contact": [
        "https://github.com/ossf/package-analysis",
        "https://openssf.slack.com/channels/package_analysis"
      ],
      "name": "OpenSSF: Package Analysis",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "import_time": "2026-03-09T17:48:12.474508932Z",
        "modified_time": "2026-03-09T17:26:01Z",
        "sha256": "1bb9649abbc3c57b35f0f247886a0b50587f752f3cf5707db3a57e85502d40f2",
        "source": "ossf-package-analysis",
        "versions": [
          "99.0.0"
        ]
      },
      {
        "id": "pypi/GENERIC-standard-pypi-install-pentest/tabformerlite",
        "import_time": "2026-03-09T18:21:38.591607631Z",
        "modified_time": "2026-03-09T17:31:39.840438Z",
        "sha256": "24a23931f60d9a2daf27a6df2eff2f3102cb239f6d058bed6646d208787f0c5b",
        "source": "kam193",
        "versions": [
          "99.0.0"
        ]
      },
      {
        "id": "pypi/GENERIC-hackerone-bugbounty/tabformerlite",
        "import_time": "2026-03-12T00:28:59.03818299Z",
        "modified_time": "2026-03-11T23:33:56.506751Z",
        "sha256": "e1be8118a3574a5be159d2890ee00434c3ae6a095721c505481b1fb83bdb6297",
        "source": "kam193",
        "versions": [
          "99.0.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (24a23931f60d9a2daf27a6df2eff2f3102cb239f6d058bed6646d208787f0c5b)\nInstalling the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.\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: GENERIC-standard-pypi-install-pentest\n\n\nReasons (based on the campaign):\n\n\n - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n\n## Source: ossf-package-analysis (1bb9649abbc3c57b35f0f247886a0b50587f752f3cf5707db3a57e85502d40f2)\nThe OpenSSF Package Analysis project identified \u0027tabformerlite\u0027 @ 99.0.0 (pypi) as malicious.\n\nIt is considered malicious because:\n\n- The package communicates with a domain associated with malicious activity.\n",
  "id": "MAL-2026-1295",
  "modified": "2026-03-12T00:30:44Z",
  "published": "2026-03-09T17:26:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/tabformerlite"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in tabformerlite (PyPI)"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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