{
  "cveId": "CVE-2018-20406",
  "url": "https://patchblox.com/security/cve/CVE-2018-20406",
  "summary": "CVE-2018-20406 is fixed in 10 products on 2 platforms, first by Python 3.7 3.7.1, released October 20, 2018. 2 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Python 3.6 and 2 others: Modules/_pickle.c in Python before 3.7.1 has an integer overflow via a large LONG_BINPUT value that is\u2026",
  "description": "Modules/_pickle.c in Python before 3.7.1 has an integer overflow via a large LONG_BINPUT value that is mishandled during a \u0022resize to twice the size\u0022 attempt. This issue might cause memory exhaustion, but is only relevant if the pickle format is used for serializing tens or hundreds of gigabytes of data. This issue is fixed in: v3.4.10, v3.4.10rc1; v3.5.10, v3.5.10rc1, v3.5.7, v3.5.7rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.7, v3.6.7rc1, v3.6.7rc2, v3.6.8, v3.6.8rc1, v3.6.9, v3.6.9rc1; v3.7.1, v3.7.1rc1, v3.7.1rc2, v3.7.2, v3.7.2rc1, v3.7.3, v3.7.3rc1, v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.",
  "published": "2018-12-22T16:00:00Z",
  "severity": "Low",
  "cvss": 7.5,
  "epss": 0.05789,
  "epssPercentile": 0.93152,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2018-20406",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Python 3.7",
      "fixedVersion": "3.7.1",
      "fix": "Python 3.7 3.7.1",
      "url": "https://patchblox.com/security/fix/windows-app/python.python.3.7-3.7.1",
      "released": "2018-10-20T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "idle-python3.6",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.7-1~18.04",
      "fix": "idle-python3.6 3.6.7-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-idle-python3.6-3.6.7-1-18.04",
      "released": "2018-12-22T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libpython3.6",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.7-1~18.04",
      "fix": "libpython3.6 3.6.7-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libpython3.6-3.6.7-1-18.04",
      "released": "2018-12-22T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libpython3.6-minimal",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.7-1~18.04",
      "fix": "libpython3.6-minimal 3.6.7-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libpython3.6-minimal-3.6.7-1-18.04",
      "released": "2018-12-22T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libpython3.6-stdlib",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.7-1~18.04",
      "fix": "libpython3.6-stdlib 3.6.7-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libpython3.6-stdlib-3.6.7-1-18.04",
      "released": "2018-12-22T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libpython3.6-testsuite",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.7-1~18.04",
      "fix": "libpython3.6-testsuite 3.6.7-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libpython3.6-testsuite-3.6.7-1-18.04",
      "released": "2018-12-22T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.6",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.7-1~18.04",
      "fix": "python3.6 3.6.7-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3.6-3.6.7-1-18.04",
      "released": "2018-12-22T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.6-examples",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.7-1~18.04",
      "fix": "python3.6-examples 3.6.7-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3.6-examples-3.6.7-1-18.04",
      "released": "2018-12-22T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.6-minimal",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.7-1~18.04",
      "fix": "python3.6-minimal 3.6.7-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3.6-minimal-3.6.7-1-18.04",
      "released": "2018-12-22T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.6-venv",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.7-1~18.04",
      "fix": "python3.6-venv 3.6.7-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3.6-venv-3.6.7-1-18.04",
      "released": "2018-12-22T16:00:00Z"
    }
  ],
  "noFixYet": [
    {
      "platform": "Windows apps",
      "product": "Python 3.5",
      "status": "no-fix",
      "affectedVersion": "3.5.4"
    },
    {
      "platform": "Windows apps",
      "product": "Python 3.6",
      "status": "no-fix",
      "affectedVersion": "3.6.8"
    }
  ],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}