Denial of service via DoH3 queries_CVE-2026-40208

3.7 / 10

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Description

An attacker might be able to delay the processing of DoH3 queries by sending DoH3 GET queries with an invalid DATA frame.

Basic Information

ID CVE-2026-40208

Source OX

Published Jun 25, 2026 at 12:22

Modified Jun 25, 2026 at 13:24

Affected Product

Vendor PowerDNS

Product DNSdist

Version 1.9.0

Affected Versions PowerDNS DNSdist 1.9.0
PowerDNS DNSdist 2.0.0

CWE Classification

CWE-705

References

www.dnsdist.org /security-advisories/powerdns-advisory-for-dnsdist-2026-09.html

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    "published": "2026-06-25T12:22:42.722Z",
    "modified": "2026-06-25T13:24:55.798Z",
    "type": "cve",
    "title": "Denial of service via DoH3 queries",
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    "references": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html",
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