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CVE-2026-40208 Denial of service via DoH3 queries

🗓️ 25 Jun 2026 12:22:42Reported by OXType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

CVE-2026-40208 describes a denial of service caused by DoH3 GET queries with an invalid DATA frame delaying processing.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-40208
25 Jun 202612:22
attackerkb
CVE
CVE-2026-40208
25 Jun 202612:22
cve
Debian CVE
CVE-2026-40208
25 Jun 202612:22
debiancve
EUVD
EUVD-2026-39347
25 Jun 202612:22
euvd
NVD
CVE-2026-40208
25 Jun 202613:16
nvd
Positive Technologies
PT-2026-52380
25 Jun 202600:00
ptsecurity
Vulnrichment
CVE-2026-40208 Denial of service via DoH3 queries
25 Jun 202612:22
vulnrichment
[
  {
    "vendor": "PowerDNS",
    "product": "DNSdist",
    "collectionURL": "https://repo.powerdns.com/",
    "packageName": "dnsdist",
    "repo": "https://github.com/PowerDNS/pdns",
    "modules": [
      "DNS over HTTP3"
    ],
    "programFiles": [
      "doh3.cc"
    ],
    "versions": [
      {
        "status": "affected",
        "version": "1.9.0",
        "lessThan": "1.9.15",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "2.0.0",
        "lessThan": "2.0.7",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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25 Jun 2026 12:22Current
CVSS 3.13.7
4