{
  "cveId": "CVE-2026-0990",
  "url": "https://patchblox.com/security/cve/CVE-2026-0990",
  "summary": "CVE-2026-0990 is fixed in 13 products on 1 platform, first by libxml2 2.9.4\u002Bdfsg1-6.1ubuntu1.9\u002Besm7, released January 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing",
  "description": "A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.",
  "published": "2026-01-15T07:15:00Z",
  "severity": "Moderate",
  "cvss": 5.9,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Uncontrolled Recursion",
  "epss": 0.00955,
  "epssPercentile": 0.61607,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0990",
  "fixes": [
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.9.14\u002Bdfsg-1.3~deb12u6",
      "fix": "DEBIAN-CVE-2026-0990",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-0990",
      "released": "2026-01-15T15:15:52Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.12.7\u002Bdfsg\u002Breally2.9.14-2.1\u002Bdeb13u3",
      "fix": "DEBIAN-CVE-2026-0990",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-0990",
      "released": "2026-01-15T15:15:52Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "Debian 14",
      "fixedVersion": "2.15.2\u002Bdfsg-0.1",
      "fix": "DEBIAN-CVE-2026-0990",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-0990",
      "released": "2026-01-15T15:15:52Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.9.4\u002Bdfsg1-6.1ubuntu1.9\u002Besm7",
      "fix": "libxml2 2.9.4\u002Bdfsg1-6.1ubuntu1.9\u002Besm7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libxml2-2.9.4-dfsg1-6.1ubuntu1.9-esm7",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.9.10\u002Bdfsg-5ubuntu0.20.04.10\u002Besm4",
      "fix": "libxml2 2.9.10\u002Bdfsg-5ubuntu0.20.04.10\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libxml2-2.9.10-dfsg-5ubuntu0.20.04.10-esm4",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.9.13\u002Bdfsg-1ubuntu0.11",
      "fix": "libxml2 2.9.13\u002Bdfsg-1ubuntu0.11",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libxml2-2.9.13-dfsg-1ubuntu0.11",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.9.14\u002Bdfsg-1.3ubuntu3.7",
      "fix": "libxml2 2.9.14\u002Bdfsg-1.3ubuntu3.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libxml2-2.9.14-dfsg-1.3ubuntu3.7",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "amzn 2023",
      "fixedVersion": "2.10.4-1.amzn2023.0.16",
      "fix": "ALAS2023-2026-1396",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1396",
      "released": "2026-02-05T22:03:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "2.10.3-150500.5.38.1",
      "fix": "SUSE-SU-2026:0570-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0570-1",
      "released": "2026-02-17T16:38:51Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.13.8-160000.4.1",
      "fix": "OPENSUSE-SU-2026:20312-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20312-1",
      "released": "2026-03-04T10:51:24Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "sles 15.7",
      "fixedVersion": "2.12.10-150700.4.11.1",
      "fix": "SUSE-SU-2026:0605-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0605-1",
      "released": "2026-02-24T11:19:20Z"
    },
    {
      "platform": "linux",
      "product": "libxml2",
      "release": "sles 16.0",
      "fixedVersion": "2.13.8-160000.4.1",
      "fix": "SUSE-SU-2026:20631-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20631-1",
      "released": "2026-03-04T10:51:03Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-16",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "2.14.5\u002Bdfsg-0.2ubuntu0.1",
      "fix": "libxml2-16 2.14.5\u002Bdfsg-0.2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libxml2-16-2.14.5-dfsg-0.2ubuntu0.1",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.10.4-1.amzn2023.0.16",
      "fix": "ALAS2023-2026-1396",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1396",
      "released": "2026-02-05T22:03:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "2.10.4-1.amzn2023.0.16",
      "fix": "ALAS2023-2026-1396",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1396",
      "released": "2026-02-05T22:03:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-devel",
      "release": "amzn 2023",
      "fixedVersion": "2.10.4-1.amzn2023.0.16",
      "fix": "ALAS2023-2026-1396",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1396",
      "released": "2026-02-05T22:03:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-python",
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      "fixedVersion": "2.10.3-150500.5.38.1",
      "fix": "SUSE-SU-2026:0570-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0570-1",
      "released": "2026-02-17T16:38:51Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-python",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.13.8-160000.4.1",
      "fix": "OPENSUSE-SU-2026:20312-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20312-1",
      "released": "2026-03-04T10:51:24Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-python",
      "release": "sles 15.7",
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      "fix": "SUSE-SU-2026:0605-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0605-1",
      "released": "2026-02-24T11:19:20Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-python",
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      "fix": "SUSE-SU-2026:20631-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20631-1",
      "released": "2026-03-04T10:51:03Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-static",
      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-1396",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1396",
      "released": "2026-02-05T22:03:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-utils",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.9.4\u002Bdfsg1-6.1ubuntu1.9\u002Besm7",
      "fix": "libxml2-utils 2.9.4\u002Bdfsg1-6.1ubuntu1.9\u002Besm7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libxml2-utils-2.9.4-dfsg1-6.1ubuntu1.9-esm7",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-utils",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.9.10\u002Bdfsg-5ubuntu0.20.04.10\u002Besm4",
      "fix": "libxml2-utils 2.9.10\u002Bdfsg-5ubuntu0.20.04.10\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libxml2-utils-2.9.10-dfsg-5ubuntu0.20.04.10-esm4",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-utils",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.9.13\u002Bdfsg-1ubuntu0.11",
      "fix": "libxml2-utils 2.9.13\u002Bdfsg-1ubuntu0.11",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libxml2-utils-2.9.13-dfsg-1ubuntu0.11",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-utils",
      "release": "Ubuntu 24.04.5 LTS (noble)",
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      "fix": "libxml2-utils 2.9.14\u002Bdfsg-1.3ubuntu3.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libxml2-utils-2.9.14-dfsg-1.3ubuntu3.7",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libxml2-utils",
      "release": "Ubuntu 25.10 (questing)",
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      "fix": "libxml2-utils 2.14.5\u002Bdfsg-0.2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libxml2-utils-2.14.5-dfsg-0.2ubuntu0.1",
      "released": "2026-01-15T07:15:00Z"
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    {
      "platform": "linux",
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      "fix": "OPENSUSE-SU-2026:20312-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20312-1",
      "released": "2026-03-04T10:51:24Z"
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      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20631-1",
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    {
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python-libxml2-2.9.4-dfsg1-6.1ubuntu1.9-esm7",
      "released": "2026-01-15T07:15:00Z"
    },
    {
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      "product": "python-libxml2",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python-libxml2-2.9.10-dfsg-5ubuntu0.20.04.10-esm4",
      "released": "2026-01-15T07:15:00Z"
    },
    {
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      "fix": "SUSE-SU-2026:0568-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0568-1",
      "released": "2026-02-17T12:26:27Z"
    },
    {
      "platform": "linux",
      "product": "python3-libxml2",
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      "fix": "python3-libxml2 2.9.4\u002Bdfsg1-6.1ubuntu1.9\u002Besm7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3-libxml2-2.9.4-dfsg1-6.1ubuntu1.9-esm7",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-libxml2",
      "release": "Ubuntu 20.04 LTS (focal)",
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      "fix": "python3-libxml2 2.9.10\u002Bdfsg-5ubuntu0.20.04.10\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python3-libxml2-2.9.10-dfsg-5ubuntu0.20.04.10-esm4",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
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      "fix": "python3-libxml2 2.9.13\u002Bdfsg-1ubuntu0.11",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-python3-libxml2-2.9.13-dfsg-1ubuntu0.11",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-libxml2",
      "release": "Ubuntu 24.04.5 LTS (noble)",
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      "fix": "python3-libxml2 2.9.14\u002Bdfsg-1.3ubuntu3.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-libxml2-2.9.14-dfsg-1.3ubuntu3.7",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-libxml2",
      "release": "Ubuntu 25.10 (questing)",
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      "fix": "python3-libxml2 2.14.5\u002Bdfsg-0.2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-python3-libxml2-2.14.5-dfsg-0.2ubuntu0.1",
      "released": "2026-01-15T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-libxml2",
      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-1396",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1396",
      "released": "2026-02-05T22:03:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-libxml2-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.10.4-1.amzn2023.0.16",
      "fix": "ALAS2023-2026-1396",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1396",
      "released": "2026-02-05T22:03:00Z"
    }
  ],
  "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"
  }
}