{
  "cveId": "CVE-2026-56405",
  "url": "https://patchblox.com/security/cve/CVE-2026-56405",
  "summary": "CVE-2026-56405 is fixed in 13 products on 1 platform, first by libxmltok1 1.2-4ubuntu0.18.04.1~esm7, released June 21, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libexpat before 2.8.2 has an integer overflow in getAttributeId.",
  "description": "libexpat before 2.8.2 has an integer overflow in getAttributeId.",
  "published": "2026-06-21T09:16:00Z",
  "severity": "Moderate",
  "cvss": 6.9,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
  "cwe": "Integer Overflow or Wraparound",
  "epss": 0.00125,
  "epssPercentile": 0.02191,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56405",
  "fixes": [
    {
      "platform": "linux",
      "product": "MozillaFirefox",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "153.5.0-160000.1.1",
      "fix": "OPENSUSE-SU-2026:22139-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22139-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "MozillaFirefox",
      "release": "sles 15.6",
      "fixedVersion": "153.5.0-150400.157.16.1",
      "fix": "SUSE-SU-2026:4834-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4834-1",
      "released": "2026-11-07T00:42:08Z"
    },
    {
      "platform": "linux",
      "product": "MozillaFirefox",
      "release": "sles 15.7",
      "fixedVersion": "153.5.0-150400.157.16.1",
      "fix": "SUSE-SU-2026:4834-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4834-1",
      "released": "2026-11-07T00:42:08Z"
    },
    {
      "platform": "linux",
      "product": "MozillaFirefox",
      "release": "sles 16.0",
      "fixedVersion": "153.5.0-160000.1.1",
      "fix": "SUSE-SU-2026:24260-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24260-1",
      "released": "2026-11-07T00:44:01Z"
    },
    {
      "platform": "linux",
      "product": "MozillaThunderbird",
      "release": "sles 15.7",
      "fixedVersion": "153.5.0-150400.13.9.1",
      "fix": "SUSE-SU-2026:4736-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4736-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.5.0-1\u002Bdeb12u3",
      "fix": "DEBIAN-CVE-2026-56405",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-56405",
      "released": "2026-06-28T17:47:07Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.8.2-1~deb13u1",
      "fix": "DEBIAN-CVE-2026-56405",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-56405",
      "released": "2026-06-28T17:47:07Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Debian 14",
      "fixedVersion": "2.8.2-1",
      "fix": "DEBIAN-CVE-2026-56405",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-56405",
      "released": "2026-06-28T17:47:07Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.2.5-3ubuntu0.9\u002Besm4",
      "fix": "expat 2.2.5-3ubuntu0.9\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-expat-2.2.5-3ubuntu0.9-esm4",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.2.9-1ubuntu0.8\u002Besm2",
      "fix": "expat 2.2.9-1ubuntu0.8\u002Besm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-expat-2.2.9-1ubuntu0.8-esm2",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.4.7-1ubuntu0.8",
      "fix": "expat 2.4.7-1ubuntu0.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-expat-2.4.7-1ubuntu0.8",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.6.1-2ubuntu0.5",
      "fix": "expat 2.6.1-2ubuntu0.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-expat-2.6.1-2ubuntu0.5",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.7.4-1ubuntu0.1",
      "fix": "expat 2.7.4-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-expat-2.7.4-1ubuntu0.1",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "amzn 2023",
      "fixedVersion": "2.8.3-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2157",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2157",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.8.5-160000.1.1",
      "fix": "OPENSUSE-SU-2026:22177-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22177-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "sles 15.6",
      "fixedVersion": "2.8.5-150400.3.40.1",
      "fix": "SUSE-SU-2026:4623-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4623-1",
      "released": "2026-11-07T00:41:11Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "sles 15.7",
      "fixedVersion": "2.8.5-150700.3.15.1",
      "fix": "SUSE-SU-2026:4619-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4619-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "sles 16.0",
      "fixedVersion": "2.8.5-160000.1.1",
      "fix": "SUSE-SU-2026:24469-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24469-1",
      "released": "2026-11-07T00:44:01Z"
    },
    {
      "platform": "linux",
      "product": "expat-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.8.3-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2157",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2157",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "expat-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "2.8.3-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2157",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2157",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "expat-devel",
      "release": "amzn 2023",
      "fixedVersion": "2.8.3-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2157",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2157",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "expat-static",
      "release": "amzn 2023",
      "fixedVersion": "2.8.3-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2157",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2157",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "amzn 2023",
      "fixedVersion": "140.12.0-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-1928",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1928",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "140.12.0-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-1928",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1928",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "140.12.0-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-1928",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1928",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.2.5-3ubuntu0.9\u002Besm4",
      "fix": "libexpat1 2.2.5-3ubuntu0.9\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libexpat1-2.2.5-3ubuntu0.9-esm4",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.2.9-1ubuntu0.8\u002Besm2",
      "fix": "libexpat1 2.2.9-1ubuntu0.8\u002Besm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libexpat1-2.2.9-1ubuntu0.8-esm2",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.4.7-1ubuntu0.8",
      "fix": "libexpat1 2.4.7-1ubuntu0.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libexpat1-2.4.7-1ubuntu0.8",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.6.1-2ubuntu0.5",
      "fix": "libexpat1 2.6.1-2ubuntu0.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libexpat1-2.6.1-2ubuntu0.5",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.7.4-1ubuntu0.1",
      "fix": "libexpat1 2.7.4-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libexpat1-2.7.4-1ubuntu0.1",
      "released": "2026-06-21T10:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libxmltok1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.2-4ubuntu0.18.04.1~esm7",
      "fix": "libxmltok1 1.2-4ubuntu0.18.04.1~esm7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libxmltok1-1.2-4ubuntu0.18.04.1-esm7",
      "released": "2026-06-21T09:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libxmltok1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.2-4ubuntu0.20.04.1~esm7",
      "fix": "libxmltok1 1.2-4ubuntu0.20.04.1~esm7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libxmltok1-1.2-4ubuntu0.20.04.1-esm7",
      "released": "2026-06-21T09:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libxmltok1",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.2-4ubuntu0.22.04.1~esm7",
      "fix": "libxmltok1 1.2-4ubuntu0.22.04.1~esm7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libxmltok1-1.2-4ubuntu0.22.04.1-esm7",
      "released": "2026-06-21T09:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libxmltok1t64",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.2-4.1ubuntu2.24.0.4.1\u002Besm5",
      "fix": "libxmltok1t64 1.2-4.1ubuntu2.24.0.4.1\u002Besm5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libxmltok1t64-1.2-4.1ubuntu2.24.0.4.1-esm5",
      "released": "2026-06-21T09:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}