{
  "cveId": "CVE-2025-40908",
  "url": "https://patchblox.com/security/cve/CVE-2025-40908",
  "summary": "CVE-2025-40908 is fixed in 4 products on 1 platform, first by libyaml-libyaml-perl 0.83\u002Bds-1ubuntu0.22.04.1, released June 1, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "perl-YAML-LibYAML: Kirill Siminov\u0027s \u0022libyaml\u0022 is arguably the best YAML implementation",
  "description": "Kirill Siminov\u0027s \u0022libyaml\u0022 is arguably the best YAML implementation. The C library is written precisely to the YAML 1.1 specification. It was originally bound to Python and was later bound to Ruby.\n\nSecurity Fix(es):\n\n* yaml-libyaml: LibYAML Perl File Modification Vulnerability (CVE-2025-40908)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2025-06-01T07:15:00Z",
  "severity": "Important",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.00472,
  "epssPercentile": 0.41045,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libyaml-libyaml-perl",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "0.86\u002Bds-1\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2025-40908",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40908",
      "released": "2025-06-01T14:15:21Z"
    },
    {
      "platform": "linux",
      "product": "libyaml-libyaml-perl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "0.903.0\u002Bds-1",
      "fix": "DEBIAN-CVE-2025-40908",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40908",
      "released": "2025-06-01T14:15:21Z"
    },
    {
      "platform": "linux",
      "product": "libyaml-libyaml-perl",
      "release": "Debian 14",
      "fixedVersion": "0.903.0\u002Bds-1",
      "fix": "DEBIAN-CVE-2025-40908",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40908",
      "released": "2025-06-01T14:15:21Z"
    },
    {
      "platform": "linux",
      "product": "libyaml-libyaml-perl",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "0.83\u002Bds-1ubuntu0.22.04.1",
      "fix": "libyaml-libyaml-perl 0.83\u002Bds-1ubuntu0.22.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libyaml-libyaml-perl-0.83-ds-1ubuntu0.22.04.1",
      "released": "2025-06-01T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libyaml-libyaml-perl",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "0.89\u002Bds-1ubuntu0.24.04.1",
      "fix": "libyaml-libyaml-perl 0.89\u002Bds-1ubuntu0.24.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libyaml-libyaml-perl-0.89-ds-1ubuntu0.24.04.1",
      "released": "2025-06-01T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "RHEL 8",
      "fixedVersion": "1:0.70-2.el8_10",
      "fix": "RHSA-2025:9329",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2025-9329",
      "released": "2025-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "RHEL 9",
      "fixedVersion": "1:0.82-6.1.el9_6",
      "fix": "RHSA-2025:9330",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2025-9330",
      "released": "2025-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "almalinux 8",
      "fixedVersion": "1:0.70-2.el8_10",
      "fix": "ALSA-2025:9329",
      "url": "https://patchblox.com/security/fix/linux/alsa-2025-9329",
      "released": "2025-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "almalinux 9",
      "fixedVersion": "1:0.82-6.1.el9_6",
      "fix": "ALSA-2025:9330",
      "url": "https://patchblox.com/security/fix/linux/alsa-2025-9330",
      "released": "2025-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "amzn 2023",
      "fixedVersion": "1:0.82-4.amzn2023.0.3",
      "fix": "ALAS2023-2025-1036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1036",
      "released": "2025-06-18T23:17:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "ol 8",
      "fixedVersion": "1:0.70-2.el8_10",
      "fix": "ELSA-2025-9329",
      "url": "https://patchblox.com/security/fix/linux/elsa-2025-9329",
      "released": "2025-06-24T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "ol 9",
      "fixedVersion": "1:0.82-6.1.el9_6",
      "fix": "ELSA-2025-9330",
      "url": "https://patchblox.com/security/fix/linux/elsa-2025-9330",
      "released": "2025-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "0.904.0-150000.3.16.1",
      "fix": "SUSE-RU-2025:03081-1",
      "url": "https://patchblox.com/security/fix/linux/suse-ru-2025-03081-1",
      "released": "2025-09-05T06:58:53Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "rocky 8",
      "fixedVersion": "1:0.70-2.el8_10",
      "fix": "RLSA-2025:9329",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2025-9329",
      "released": "2025-07-29T13:39:03Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "rocky 9",
      "fixedVersion": "1:0.82-6.1.el9_6",
      "fix": "RLSA-2025:9330",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2025-9330",
      "released": "2025-10-04T00:11:52Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "sles 15.6",
      "fixedVersion": "0.904.0-150000.3.16.1",
      "fix": "SUSE-RU-2025:03081-1",
      "url": "https://patchblox.com/security/fix/linux/suse-ru-2025-03081-1",
      "released": "2025-09-05T06:58:53Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML",
      "release": "sles 15.7",
      "fixedVersion": "0.904.0-150000.3.16.1",
      "fix": "SUSE-RU-2025:03081-1",
      "url": "https://patchblox.com/security/fix/linux/suse-ru-2025-03081-1",
      "released": "2025-09-05T06:58:53Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:0.82-4.amzn2023.0.3",
      "fix": "ALAS2023-2025-1036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1036",
      "released": "2025-06-18T23:17:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-YAML-LibYAML-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:0.82-4.amzn2023.0.3",
      "fix": "ALAS2023-2025-1036",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1036",
      "released": "2025-06-18T23:17:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}