CVE-2026-40208 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

PowerDNS

DNSdist

unaffected

Version	Status	Constraints
`1.9.0`	affected	< 1.9.15
`2.0.0`	affected	< 2.0.7

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html

History

Thu, 25 Jun 2026 14:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-705
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 25 Jun 2026 13:00:00 +0000

Type	Values Removed	Values Added
Description		An attacker might be able to delay the processing of DoH3 queries by sending DoH3 GET queries with an invalid DATA frame.
Title		Denial of service via DoH3 queries
References		https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html
Metrics		cvssV3_1 `{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: OX

Published: 2026-06-25T12:22:42.722Z

Updated: 2026-06-25T13:24:55.798Z

Reserved: 2026-04-10T07:11:39.060Z

Link: CVE-2026-40208

Vulnrichment

Updated: 2026-06-25T13:24:38.396Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-705

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