An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default.

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Advisories

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Fixes

Solution

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Workaround

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History

Wed, 22 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 22 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Description An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default.
Title Resource exhaustion via DoQ/DoH3 connections
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: OX

Published:

Updated: 2026-04-22T14:51:51.130Z

Reserved: 2026-03-18T10:06:16.572Z

Link: CVE-2026-33254

cve-icon Vulnrichment

Updated: 2026-04-22T14:50:08.743Z

cve-icon NVD

Status : Received

Published: 2026-04-22T14:16:53.520

Modified: 2026-04-22T15:16:12.697

Link: CVE-2026-33254

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.