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CVE-2026-33254

nvd nist
Published: Apr 22, 2026Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: NVD

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.

Affected (2)

Products: Powerdns: Dnsdist
Powerdns
1 product
Dnsdist
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Powerdns
Dnsdist
From 1.9.0 to 1.9.13
Dnsdist
From 2.0.0 to 2.0.4

Related CWEs

CWE-770
Allocation of Resources Without Limits or Throttling
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (1)

Source: security@open-xchange.com
Vendor Advisory

Timeline

No history available yet.