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CVE-2026-41292 Long list of incoming EDNS options degrades performance

🗓️ 20 May 2026 09:19:13Reported by NLnet LabsType 
vulnrichment
 vulnrichment
🔗 github.com👁 11 Views

Unbound up to 1.25.0 can DoS via long EDNS options lists; 1.25.1 limits to 100 options.

Related
Affected
Refs
[
  {
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:10.2"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 10",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:1.24.2-7.el10_2.2",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "unbound",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:8"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:1.16.2-5.12.el8_10",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "unbound",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "versions": [
      {
        "status": "unaffected",
        "version": "0:1.24.2-3.el9_8.2",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "unbound",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openshift:4.22::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4.22",
    "versions": [
      {
        "status": "unaffected",
        "version": "4.22.9.8.202608130832-0",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "rhcos",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "versions": [
      {
        "status": "unaffected",
        "version": "1.25.1-2.hum1",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "unbound-main",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:jboss_data_grid:8"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Data Grid 8",
    "packageName": "unboundid-ldapsdk",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "unaffected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "packageName": "unbound",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "packageName": "unbound",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:jbosseapxp"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "packageName": "unboundid-ldapsdk",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "unaffected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openstack:16.2"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenStack Platform 16.2",
    "packageName": "rhosp-rhel8-tech-preview/openstack-unbound",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openstack:17.1"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenStack Platform 17.1",
    "packageName": "rhosp-rhel9/openstack-unbound",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openstack:18.0"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenStack Platform 18.0",
    "packageName": "rhoso/openstack-unbound-rhel9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openstack:18.0"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenStack Platform 18.0",
    "packageName": "rhoso-operators/designate-rhel9-operator",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  }
]

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20 May 2026 09:19Current
5.8Medium risk
Vulners AI Score5.8
CVSS 48.7
EPSS0.00722
SSVC
11