{
  "cveId": "CVE-2018-14647",
  "url": "https://patchblox.com/security/cve/CVE-2018-14647",
  "summary": "CVE-2018-14647 is fixed in 28 products on 2 platforms, first by idle-python2.7 2.7.15~rc1-1ubuntu0.1, released September 23, 2018. 1 other affected product has no fix yet. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Python 3.6 and 2 others: Python\u0027s elementtree C accelerator failed to initialise Expat\u0027s hash salt during initialization.",
  "description": "Python\u0027s elementtree C accelerator failed to initialise Expat\u0027s hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat\u0027s internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.",
  "published": "2018-09-23T17:00:00Z",
  "severity": "Medium",
  "cvss": 7.5,
  "cwe": "CWE-665",
  "epss": 0.10911,
  "epssPercentile": 0.95897,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2018-14647",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "Python 3.6",
      "fixedVersion": "3.6.7",
      "fix": "Python 3.6 3.6.7",
      "url": "https://patchblox.com/security/fix/windows-app/python.python.3.6-3.6.7",
      "released": "2018-10-20T00:00:00Z"
    },
    {
      "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-python2.7",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.7.15~rc1-1ubuntu0.1",
      "fix": "idle-python2.7 2.7.15~rc1-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-idle-python2.7-2.7.15-rc1-1ubuntu0.1",
      "released": "2018-09-23T17:00:00Z"
    },
    {
      "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": "idle-python3.7",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.7.1-1~18.04",
      "fix": "idle-python3.7 3.7.1-1~18.04",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-idle-python3.7-3.7.1-1-18.04",
      "released": "2018-09-23T17:00:00Z"
    },
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      "product": "libpython2.7",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
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      "fix": "libpython2.7 2.7.15~rc1-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libpython2.7-2.7.15-rc1-1ubuntu0.1",
      "released": "2018-09-23T17:00:00Z"
    },
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      "product": "libpython2.7-minimal",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
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      "fix": "libpython2.7-minimal 2.7.15~rc1-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libpython2.7-minimal-2.7.15-rc1-1ubuntu0.1",
      "released": "2018-09-23T17:00:00Z"
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      "product": "libpython2.7-stdlib",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libpython2.7-stdlib-2.7.15-rc1-1ubuntu0.1",
      "released": "2018-09-23T17:00:00Z"
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libpython2.7-testsuite-2.7.15-rc1-1ubuntu0.1",
      "released": "2018-09-23T17:00:00Z"
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libpython3.6-3.6.7-1-18.04",
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  ],
  "noFixYet": [
    {
      "platform": "Windows apps",
      "product": "Python 3.5",
      "status": "no-fix",
      "affectedVersion": "3.5.4"
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}