{
  "cveId": "CVE-2026-41292",
  "url": "https://patchblox.com/security/cve/CVE-2026-41292",
  "summary": "CVE-2026-41292 is fixed in 17 products on 1 platform, first by libunbound2 1.6.7-1ubuntu2.6\u002Besm4, released May 19, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Long list of incoming EDNS options degrades performance",
  "description": "The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. \n\nSecurity Fix(es):\n\n* unbound: Unbound: Denial of Service via excessive EDNS options (CVE-2026-41292)\n\n* unbound: Unbound: Cache manipulation via \u0027ghost domain names\u0027 attack (CVE-2026-40622)\n\n* unbound: Unbound: Denial of Service due to excessive resource consumption with large DNS Resource Record Sets (CVE-2026-44390)\n\n* unbound: Unbound: Denial of Service due to degraded resolution performance in jostle logic (CVE-2026-42534)\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": "2026-05-19T17:00:00Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Inefficient Algorithmic Complexity",
  "epss": 0.00748,
  "epssPercentile": 0.55142,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41292",
  "fixes": [
    {
      "platform": "linux",
      "product": "libunbound2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.6\u002Besm4",
      "fix": "libunbound2 1.6.7-1ubuntu2.6\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libunbound2-1.6.7-1ubuntu2.6-esm4",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libunbound8",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.11\u002Besm1",
      "fix": "libunbound8 1.9.4-2ubuntu1.11\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libunbound8-1.9.4-2ubuntu1.11-esm1",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libunbound8",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.13.1-1ubuntu5.15",
      "fix": "libunbound8 1.13.1-1ubuntu5.15",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libunbound8-1.13.1-1ubuntu5.15",
      "released": "2026-05-27T17:38:24Z"
    },
    {
      "platform": "linux",
      "product": "libunbound8",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.19.2-1ubuntu3.8",
      "fix": "libunbound8 1.19.2-1ubuntu3.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libunbound8-1.19.2-1ubuntu3.8",
      "released": "2026-05-27T17:38:28Z"
    },
    {
      "platform": "linux",
      "product": "libunbound8",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1.22.0-2ubuntu2.3",
      "fix": "libunbound8 1.22.0-2ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libunbound8-1.22.0-2ubuntu2.3",
      "released": "2026-05-27T17:38:31Z"
    },
    {
      "platform": "linux",
      "product": "libunbound8",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.24.2-1ubuntu2.1",
      "fix": "libunbound8 1.24.2-1ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libunbound8-1.24.2-1ubuntu2.1",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python-unbound",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.6\u002Besm4",
      "fix": "python-unbound 1.6.7-1ubuntu2.6\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python-unbound-1.6.7-1ubuntu2.6-esm4",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python-unbound",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.11\u002Besm1",
      "fix": "python-unbound 1.9.4-2ubuntu1.11\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python-unbound-1.9.4-2ubuntu1.11-esm1",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "RHEL 8",
      "fixedVersion": "0:1.16.2-5.12.el8_10",
      "fix": "RHSA-2026:37282",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-37282",
      "released": "2026-07-31T14:18:54Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "RHEL 9",
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      "fix": "RHSA-2026:36777",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-36777",
      "released": "2026-07-31T14:20:33Z"
    },
    {
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      "product": "python3-unbound",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.6\u002Besm4",
      "fix": "python3-unbound 1.6.7-1ubuntu2.6\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3-unbound-1.6.7-1ubuntu2.6-esm4",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.11\u002Besm1",
      "fix": "python3-unbound 1.9.4-2ubuntu1.11\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python3-unbound-1.9.4-2ubuntu1.11-esm1",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.13.1-1ubuntu5.15",
      "fix": "python3-unbound 1.13.1-1ubuntu5.15",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-python3-unbound-1.13.1-1ubuntu5.15",
      "released": "2026-05-27T17:38:24Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.19.2-1ubuntu3.8",
      "fix": "python3-unbound 1.19.2-1ubuntu3.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-unbound-1.19.2-1ubuntu3.8",
      "released": "2026-05-27T17:38:28Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1.22.0-2ubuntu2.3",
      "fix": "python3-unbound 1.22.0-2ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-python3-unbound-1.22.0-2ubuntu2.3",
      "released": "2026-05-27T17:38:31Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.24.2-1ubuntu2.1",
      "fix": "python3-unbound 1.24.2-1ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-python3-unbound-1.24.2-1ubuntu2.1",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "almalinux 10",
      "fixedVersion": "1.24.2-7.el10_2.2",
      "fix": "ALSA-2026:36320",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-36320",
      "released": "2026-07-07T00:00:00Z"
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    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "almalinux 8",
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      "fix": "ALSA-2026:37282",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-37282",
      "released": "2026-07-09T00:00:00Z"
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    {
      "platform": "linux",
      "product": "python3-unbound",
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      "url": "https://patchblox.com/security/fix/linux/alsa-2026-36777",
      "released": "2026-07-08T00:00:00Z"
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    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-1756",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1756",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "ol 10",
      "fixedVersion": "0:1.24.2-7.el10_2.2",
      "fix": "ELSA-2026-36320",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-36320",
      "released": "2026-07-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "ol 8",
      "fixedVersion": "0:1.16.2-5.12.el8_10",
      "fix": "ELSA-2026-37282",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-37282",
      "released": "2026-07-09T00:00:00Z"
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    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "ol 9",
      "fixedVersion": "0:1.24.2-3.el9_8.2",
      "fix": "ELSA-2026-36777",
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      "released": "2026-07-09T00:00:00Z"
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      "platform": "linux",
      "product": "python3-unbound-debuginfo",
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      "fix": "ALAS2023-2026-1756",
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      "released": "2026-05-25T09:00:00Z"
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    {
      "platform": "linux",
      "product": "unbound",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.22.0-2\u002Bdeb13u3",
      "fix": "DEBIAN-CVE-2026-41292",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-41292",
      "released": "2026-05-27T17:38:13Z"
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      "platform": "linux",
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      "release": "Debian 14",
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      "fix": "DEBIAN-CVE-2026-41292",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-41292",
      "released": "2026-05-27T17:38:13Z"
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      "platform": "linux",
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      "released": "2026-05-20T09:21:24Z"
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-unbound-1.6.7-1ubuntu2.6-esm4",
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      "released": "2026-05-19T17:00:00Z"
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      "fix": "ELSA-2026-36777",
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      "released": "2026-07-28T18:01:06Z"
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      "fix": "RLSA-2026:36777",
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      "platform": "linux",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-unbound-anchor-1.9.4-2ubuntu1.11-esm1",
      "released": "2026-05-19T17:00:00Z"
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      "platform": "linux",
      "product": "unbound-anchor",
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