{
  "fix": "libjavascriptcoregtk-4.0-18 2.20.5-0ubuntu0.18.04.1",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libjavascriptcoregtk-4.0-18-2.20.5-0ubuntu0.18.04.1",
  "summary": "libjavascriptcoregtk-4.0-18 2.20.5-0ubuntu0.18.04.1, released August 5, 2018, fixes 14 CVEs in libjavascriptcoregtk-4.0-18. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "libjavascriptcoregtk-4.0-18 2.20.5-0ubuntu0.18.04.1 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2018-08-05T17:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2018-4246, high severity",
  "supported": false,
  "cveCount": 14,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.02966,
  "maxCvss": 8.8,
  "appliesTo": [
    {
      "product": "libjavascriptcoregtk-4.0-18",
      "productUrl": "https://patchblox.com/security/product/linux/libjavascriptcoregtk-4.0-18",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.20.5-0ubuntu0.18.04.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2018-4246",
      "url": "https://patchblox.com/security/cve/CVE-2018-4246",
      "title": "iTunes: An issue was discovered in certain Apple products.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.02966,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4262",
      "url": "https://patchblox.com/security/cve/CVE-2018-4262",
      "title": "iTunes: In Safari before 11.1.2, iTunes before 12.8 for Windows, iOS before 11.4.1, tvOS before 11.4.1, iCloud\u2026",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.02592,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4264",
      "url": "https://patchblox.com/security/cve/CVE-2018-4264",
      "title": "iTunes: Multiple memory corruption issues were addressed with improved memory handling.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.02065,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4272",
      "url": "https://patchblox.com/security/cve/CVE-2018-4272",
      "title": "iTunes: Multiple memory corruption issues were addressed with improved memory handling.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.02065,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4265",
      "url": "https://patchblox.com/security/cve/CVE-2018-4265",
      "title": "iTunes: Multiple memory corruption issues were addressed with improved memory handling.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.02057,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4263",
      "url": "https://patchblox.com/security/cve/CVE-2018-4263",
      "title": "iTunes: Multiple memory corruption issues were addressed with improved memory handling.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01992,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4261",
      "url": "https://patchblox.com/security/cve/CVE-2018-4261",
      "title": "iTunes: Multiple memory corruption issues were addressed with improved memory handling.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01985,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4267",
      "url": "https://patchblox.com/security/cve/CVE-2018-4267",
      "title": "iTunes: Multiple memory corruption issues were addressed with improved memory handling.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01976,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4284",
      "url": "https://patchblox.com/security/cve/CVE-2018-4284",
      "title": "iTunes: A type confusion issue was addressed with improved memory handling.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01584,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4278",
      "url": "https://patchblox.com/security/cve/CVE-2018-4278",
      "title": "iTunes: In Safari before 11.1.2, iTunes before 12.8 for Windows, iOS before 11.4.1, tvOS before 11.4.1, iCloud\u2026",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 4.3,
      "epss": 0.02279,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4270",
      "url": "https://patchblox.com/security/cve/CVE-2018-4270",
      "title": "iTunes: A memory corruption issue was addressed with improved memory handling.",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.02072,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4273",
      "url": "https://patchblox.com/security/cve/CVE-2018-4273",
      "title": "iTunes: Multiple memory corruption issues were addressed with improved input validation.",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.5,
      "epss": 0.02064,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-4266",
      "url": "https://patchblox.com/security/cve/CVE-2018-4266",
      "title": "iTunes: A race condition was addressed with additional validation.",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.9,
      "epss": 0.01784,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12911",
      "url": "https://patchblox.com/security/cve/CVE-2018-12911",
      "title": "gir1.2-javascriptcoregtk-4.0: WebKitGTK\u002B 2.20.3 has an off-by-one error, with a resultant out-of-bounds write, in the get_simple_globs functions in...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01728,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-12T13:55:20Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}