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CVE-2026-33594

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

A client can trigger excessive memory allocation by generating a lot of queries that are routed to an overloaded DoH backend, causing queries to accumulate into a buffer that will not be released until the end of the connection.

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.