{
  "cveId": "CVE-2026-92543",
  "url": "https://patchblox.com/security/cve/CVE-2026-92543",
  "summary": "CVE-2026-92543 is fixed in 3 products on 1 platform, first by ALAS2023-2026-3266, released November 7, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Docker Engine insecure-registry fallback via malicious DNS responses",
  "description": "Docker Engine classifies a registry hostname as insecure using an any-match DNS check. loadInsecureRegistries() injects 127.0.0.0/8 and ::1/128 as insecure CIDRs by default. isCIDRMatch resolves all of the hostname\u0027s addresses and returns true if a single address is in the insecure CIDR list. Because the transport re-dials the hostname rather than the CIDR-matching address, a DNS answer set of one loopback IP plus a non-loopback attacker IP disables certificate verification and enables HTTP fallback for the registry connection.",
  "published": "2026-10-11T01:48:03Z",
  "severity": "Important",
  "cwe": "Improper Certificate Validation",
  "epss": 0.00087,
  "epssPercentile": 0.00344,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-92543",
  "fixes": [
    {
      "platform": "linux",
      "product": "docker",
      "release": "amzn 2023",
      "fixedVersion": "25.0.18-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3266",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3266",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "docker-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "25.0.18-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3266",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3266",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "docker-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "25.0.18-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3266",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3266",
      "released": "2026-11-07T01:06:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-11T13:47:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}