{
  "cveId": "CVE-2026-25210",
  "url": "https://patchblox.com/security/cve/CVE-2026-25210",
  "summary": "CVE-2026-25210 is fixed in 11 products on 1 platform, first by expat 2.2.5-3ubuntu0.9\u002Besm3, released January 29, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "expat: In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is...",
  "description": "In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.",
  "published": "2026-01-29T23:16:00Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00211,
  "epssPercentile": 0.114,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "expat",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.5.0-1\u002Bdeb12u4",
      "fix": "DEBIAN-CVE-2026-25210",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-25210",
      "released": "2026-01-30T07:16:15Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.8.2-1~deb13u1",
      "fix": "DEBIAN-CVE-2026-25210",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-25210",
      "released": "2026-01-30T07:16:15Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Debian 14",
      "fixedVersion": "2.7.4-1",
      "fix": "DEBIAN-CVE-2026-25210",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-25210",
      "released": "2026-01-30T07:16:15Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.2.5-3ubuntu0.9\u002Besm3",
      "fix": "expat 2.2.5-3ubuntu0.9\u002Besm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-expat-2.2.5-3ubuntu0.9-esm3",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.2.9-1ubuntu0.8\u002Besm1",
      "fix": "expat 2.2.9-1ubuntu0.8\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-expat-2.2.9-1ubuntu0.8-esm1",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.4.7-1ubuntu0.7",
      "fix": "expat 2.4.7-1ubuntu0.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-expat-2.4.7-1ubuntu0.7",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.6.1-2ubuntu0.4",
      "fix": "expat 2.6.1-2ubuntu0.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-expat-2.6.1-2ubuntu0.4",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "2.7.1-2ubuntu0.2",
      "fix": "expat 2.7.1-2ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-expat-2.7.1-2ubuntu0.2",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "amzn 2023",
      "fixedVersion": "2.6.3-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1425",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1425",
      "released": "2026-02-16T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "2.7.1-150400.3.34.1",
      "fix": "SUSE-SU-2026:0826-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0826-1",
      "released": "2026-03-05T15:16:40Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.7.1-160000.4.1",
      "fix": "OPENSUSE-SU-2026:20306-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20306-1",
      "released": "2026-03-03T16:13:34Z"
    },
    {
      "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": "2.7.1-160000.4.1",
      "fix": "SUSE-SU-2026:20627-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20627-1",
      "released": "2026-03-03T16:04:58Z"
    },
    {
      "platform": "linux",
      "product": "expat-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.6.3-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1425",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1425",
      "released": "2026-02-16T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "expat-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "2.6.3-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1425",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1425",
      "released": "2026-02-16T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "expat-devel",
      "release": "amzn 2023",
      "fixedVersion": "2.6.3-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1425",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1425",
      "released": "2026-02-16T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "expat-static",
      "release": "amzn 2023",
      "fixedVersion": "2.6.3-1.amzn2023.0.4",
      "fix": "ALAS2023-2026-1425",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1425",
      "released": "2026-02-16T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox",
      "release": "amzn 2023",
      "fixedVersion": "140.7.0-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-1424",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1424",
      "released": "2026-02-16T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "140.7.0-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-1424",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1424",
      "released": "2026-02-16T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "140.7.0-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-1424",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1424",
      "released": "2026-02-16T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.2.5-3ubuntu0.9\u002Besm3",
      "fix": "libexpat1 2.2.5-3ubuntu0.9\u002Besm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libexpat1-2.2.5-3ubuntu0.9-esm3",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.2.9-1ubuntu0.8\u002Besm1",
      "fix": "libexpat1 2.2.9-1ubuntu0.8\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libexpat1-2.2.9-1ubuntu0.8-esm1",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.4.7-1ubuntu0.7",
      "fix": "libexpat1 2.4.7-1ubuntu0.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libexpat1-2.4.7-1ubuntu0.7",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.6.1-2ubuntu0.4",
      "fix": "libexpat1 2.6.1-2ubuntu0.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libexpat1-2.6.1-2ubuntu0.4",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libexpat1",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "2.7.1-2ubuntu0.2",
      "fix": "libexpat1 2.7.1-2ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libexpat1-2.7.1-2ubuntu0.2",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libxmltok1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.2-4ubuntu0.18.04.1~esm6",
      "fix": "libxmltok1 1.2-4ubuntu0.18.04.1~esm6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libxmltok1-1.2-4ubuntu0.18.04.1-esm6",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libxmltok1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.2-4ubuntu0.20.04.1~esm6",
      "fix": "libxmltok1 1.2-4ubuntu0.20.04.1~esm6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libxmltok1-1.2-4ubuntu0.20.04.1-esm6",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libxmltok1",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.2-4ubuntu0.22.04.1~esm6",
      "fix": "libxmltok1 1.2-4ubuntu0.22.04.1~esm6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libxmltok1-1.2-4ubuntu0.22.04.1-esm6",
      "released": "2026-01-29T23:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libxmltok1t64",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.2-4.1ubuntu2.24.0.4.1\u002Besm4",
      "fix": "libxmltok1t64 1.2-4.1ubuntu2.24.0.4.1\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libxmltok1t64-1.2-4.1ubuntu2.24.0.4.1-esm4",
      "released": "2026-01-29T23:16:00Z"
    }
  ],
  "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"
  }
}