{
  "cveId": "CVE-2026-42004",
  "url": "https://patchblox.com/security/cve/CVE-2026-42004",
  "summary": "CVE-2026-42004 is fixed in dnsdist on 1 platform, first by DEBIAN-CVE-2026-42004, released June 26, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "dnsdist: An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist\u2019s filtering rules, but will be rewritt...",
  "description": "An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist\u2019s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that DNSdist did not filter.",
  "published": "2026-06-25T13:16:40Z",
  "severity": "low",
  "cvss": 3.7,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
  "epss": 0.00225,
  "epssPercentile": 0.13263,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.9.15-0\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-42004",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42004",
      "released": "2026-06-26T17:32:29Z"
    },
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "Debian 14",
      "fixedVersion": "2.1.0-1",
      "fix": "DEBIAN-CVE-2026-42004",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42004",
      "released": "2026-06-26T17:32:29Z"
    },
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.9.15-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21533-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21533-1",
      "released": "2026-08-05T09:13:07Z"
    },
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "sles 16.0",
      "fixedVersion": "1.9.15-160000.1.1",
      "fix": "SUSE-SU-2026:23146-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23146-1",
      "released": "2026-08-05T09:14:01Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}