{
  "cveId": "CVE-2018-18311",
  "url": "https://patchblox.com/security/cve/CVE-2018-18311",
  "summary": "CVE-2018-18311 is fixed in 5 products on 1 platform, first by libperl5.26 5.26.1-6ubuntu0.3, released November 28, 2018. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libperl5.26: Perl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular expression that triggers inva...",
  "description": "Perl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.",
  "published": "2018-11-28T16:00:00Z",
  "severity": "Medium",
  "epss": 0.11676,
  "epssPercentile": 0.96082,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libperl5.26",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.3",
      "fix": "libperl5.26 5.26.1-6ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libperl5.26-5.26.1-6ubuntu0.3",
      "released": "2018-11-28T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.3",
      "fix": "perl 5.26.1-6ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-perl-5.26.1-6ubuntu0.3",
      "released": "2018-11-28T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-base",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.3",
      "fix": "perl-base 5.26.1-6ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-perl-base-5.26.1-6ubuntu0.3",
      "released": "2018-11-28T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-debug",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.3",
      "fix": "perl-debug 5.26.1-6ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-perl-debug-5.26.1-6ubuntu0.3",
      "released": "2018-11-28T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-modules-5.26",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.3",
      "fix": "perl-modules-5.26 5.26.1-6ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-perl-modules-5.26-5.26.1-6ubuntu0.3",
      "released": "2018-11-28T16:00:00Z"
    }
  ],
  "noFixYet": [],
  "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"
  }
}