{
  "cveId": "CVE-2020-16156",
  "url": "https://patchblox.com/security/cve/CVE-2020-16156",
  "summary": "CVE-2020-16156 is fixed in 10 products on 1 platform, first by libperl5.26 5.26.1-6ubuntu0.6, released December 13, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "perl-modules-5.26: CPAN 2.28 allows Signature Verification Bypass.",
  "description": "CPAN 2.28 allows Signature Verification Bypass.",
  "published": "2021-12-13T10:15:00Z",
  "severity": "Medium",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "epss": 0.00858,
  "epssPercentile": 0.58682,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libperl5.26",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.6",
      "fix": "libperl5.26 5.26.1-6ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libperl5.26-5.26.1-6ubuntu0.6",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libperl5.30",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "5.30.0-9ubuntu0.3",
      "fix": "libperl5.30 5.30.0-9ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libperl5.30-5.30.0-9ubuntu0.3",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libperl5.34",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.34.0-3ubuntu1.1",
      "fix": "libperl5.34 5.34.0-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libperl5.34-5.34.0-3ubuntu1.1",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl",
      "release": "Debian 11.6 (bullseye)",
      "fixedVersion": "5.32.1-4\u002Bdeb11u4",
      "fix": "DLA-3926-1",
      "url": "https://patchblox.com/security/fix/linux/dla-3926-1",
      "released": "2024-10-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.36.0-4",
      "fix": "DEBIAN-CVE-2020-16156",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2020-16156",
      "released": "2021-12-13T18:15:07Z"
    },
    {
      "platform": "linux",
      "product": "perl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.36.0-4",
      "fix": "DEBIAN-CVE-2020-16156",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2020-16156",
      "released": "2021-12-13T18:15:07Z"
    },
    {
      "platform": "linux",
      "product": "perl",
      "release": "Debian 14",
      "fixedVersion": "5.36.0-4",
      "fix": "DEBIAN-CVE-2020-16156",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2020-16156",
      "released": "2021-12-13T18:15:07Z"
    },
    {
      "platform": "linux",
      "product": "perl",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.6",
      "fix": "perl 5.26.1-6ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-perl-5.26.1-6ubuntu0.6",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "5.30.0-9ubuntu0.3",
      "fix": "perl 5.30.0-9ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-perl-5.30.0-9ubuntu0.3",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.34.0-3ubuntu1.1",
      "fix": "perl 5.34.0-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-perl-5.34.0-3ubuntu1.1",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CPAN",
      "release": "RHEL 8",
      "fixedVersion": "0:2.18-402.el8_10",
      "fix": "RHSA-2025:8432",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2025-8432",
      "released": "2025-06-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CPAN",
      "release": "almalinux 8",
      "fixedVersion": "2.18-402.el8_10",
      "fix": "ALSA-2025:8432",
      "url": "https://patchblox.com/security/fix/linux/alsa-2025-8432",
      "released": "2025-06-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CPAN",
      "release": "ol 8",
      "fixedVersion": "0:2.18-402.el8_10",
      "fix": "ELSA-2025-8432",
      "url": "https://patchblox.com/security/fix/linux/elsa-2025-8432",
      "released": "2025-06-03T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CPAN",
      "release": "rocky 8",
      "fixedVersion": "0:2.18-402.el8_10",
      "fix": "RLSA-2025:8432",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2025-8432",
      "released": "2025-07-29T13:38:41Z"
    },
    {
      "platform": "linux",
      "product": "perl-base",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.6",
      "fix": "perl-base 5.26.1-6ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-perl-base-5.26.1-6ubuntu0.6",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-base",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "5.30.0-9ubuntu0.3",
      "fix": "perl-base 5.30.0-9ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-perl-base-5.30.0-9ubuntu0.3",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-base",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.34.0-3ubuntu1.1",
      "fix": "perl-base 5.34.0-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-perl-base-5.34.0-3ubuntu1.1",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-debug",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.6",
      "fix": "perl-debug 5.26.1-6ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-perl-debug-5.26.1-6ubuntu0.6",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-debug",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "5.30.0-9ubuntu0.3",
      "fix": "perl-debug 5.30.0-9ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-perl-debug-5.30.0-9ubuntu0.3",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-debug",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.34.0-3ubuntu1.1",
      "fix": "perl-debug 5.34.0-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-perl-debug-5.34.0-3ubuntu1.1",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-modules-5.26",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.26.1-6ubuntu0.6",
      "fix": "perl-modules-5.26 5.26.1-6ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-perl-modules-5.26-5.26.1-6ubuntu0.6",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-modules-5.30",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "5.30.0-9ubuntu0.3",
      "fix": "perl-modules-5.30 5.30.0-9ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-perl-modules-5.30-5.30.0-9ubuntu0.3",
      "released": "2021-12-13T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-modules-5.34",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "5.34.0-3ubuntu1.1",
      "fix": "perl-modules-5.34 5.34.0-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-perl-modules-5.34-5.34.0-3ubuntu1.1",
      "released": "2021-12-13T10:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}