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.

Related CPE's

a

powerdns

dnsdist

2

References

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html

Vendor Advisory

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0

Secondary
CWE-770

CVSS impact metrics

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

5.3 · Medium

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2026-04-22T14:16:53.837Z

5 months ago

Last modified

2026-06-17T10:37:45.553Z

3 months ago