Malicious code in fontcase (PyPI)

{
  "id": "a56db6c32d30f5e5e1c531b34ea5d884261d8a3ab5a5af9bfbb6cb4f570466ba",
  "url": "https://osv.dev/vulnerability/MAL-2026-17862",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Malicious code in fontcase (PyPI)",
    "summary": "--- _-= Per source details. Do not edit below this line.=-_ ## Source: kam193 (9e2c4992e5295f2b094f3c7c2b2e6c2dbc8d0d9ca6242d58318e6e1b83a4255c) During import, the package downloads and executes an infostealer. --- Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-10-fontcase Reasons (based on the campaign): - infostealer - Downloads and executes a remote executable. - uses-telegram-bot - exfiltration-browser-data - exfiltration-credentials",
    "evidence": "osv:MAL-2026-17862",
    "products": [
      {
        "name": {
          "value": "fontcase",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.1.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.1.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.1.2",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "MAL-2026-17862",
      "aliases": [
        "MAL-2026-17862"
      ],
      "affected": [
        {
          "package": {
            "name": "fontcase",
            "purl": "pkg:pypi/fontcase",
            "ecosystem": "PyPI"
          },
          "versions": [
            "0.1.0",
            "0.1.1",
            "0.1.2"
          ],
          "database_specific": {
            "source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/fontcase/MAL-2026-17862.json"
          }
        }
      ],
      "modified": "2026-10-13T20:30:03.055532383Z",
      "provider": "osv",
      "references": [
        "https://www.virustotal.com/gui/file/08c3367965ba26fd0c2ed4ecac2fe831cf8fe517af59ce6947ae18b4fa30e20f/detection",
        "https://tria.ge/261013-x3rflayz4j",
        "https://bad-packages.kam193.eu/pypi/package/fontcase"
      ],
      "provider_metadata": {
        "iocs": {
          "urls": [
            "https://github.com/unicodeces/font-atlas/raw/main/fonts/serif-didone/rufina/process-manager.exe",
            "https://raw.githubusercontent.com/unicodeces/font-atlas/main/fonts/serif-didone/rufina/process-manager.exe",
            "https://github.com/unicodeces/font-atlas"
          ]
        },
        "malicious-packages-origins": [
          {
            "id": "pypi/2026-10-fontcase/fontcase",
            "sha256": "9e2c4992e5295f2b094f3c7c2b2e6c2dbc8d0d9ca6242d58318e6e1b83a4255c",
            "source": "kam193",
            "versions": [
              "0.1.0",
              "0.1.1",
              "0.1.2"
            ],
            "import_time": "2026-10-13T20:19:21.470136436Z",
            "modified_time": "2026-10-13T19:30:53.143863Z"
          }
        ]
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 313679,
  "published_at": "2026-10-13T19:30:53+00:00"
}