medium5.3
CVE-2026-33254
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.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Powerdns | Dnsdist | from 1.9.0 before 1.9.13 from 2.0.0 before 2.0.4 |