CVE-2026-40208

{
  "id": "CVE-2026-40208",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-25T13:16:39.427",
  "lastModified": "2026-10-25T23:10:00.167",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An attacker might be able to delay the processing of DoH3 queries by sending DoH3 GET queries with an invalid DATA frame."
    },
    {
      "lang": "es",
      "value": "Un atacante podría retrasar el procesamiento de las consultas DoH3 enviando consultas GET de DoH3 con una trama DATA inválida."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "PowerDNS",
          "product": "DNSdist",
          "defaultStatus": "unaffected",
          "collectionURL": "https://repo.powerdns.com/",
          "packageName": "dnsdist",
          "modules": [
            "DNS over HTTP3"
          ],
          "programFiles": [
            "doh3.cc"
          ],
          "repo": "https://github.com/PowerDNS/pdns",
          "versions": [
            {
              "version": "1.9.0",
              "lessThan": "1.9.15",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "2.0.0",
              "lessThan": "2.0.7",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "baseScore": 3.7,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-25T13:24:51.405029Z",
          "id": "CVE-2026-40208",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-705"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html",
      "source": "[email protected]"
    }
  ]
}