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.
References
| Link | Resource |
|---|---|
| https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
27 Apr 2026, 16:58
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:* | |
| First Time |
Powerdns dnsdist
Powerdns |
|
| References | () https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html - Vendor Advisory |
22 Apr 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-770 |
22 Apr 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-22 14:16
Updated : 2026-04-27 16:58
NVD link : CVE-2026-33254
Mitre link : CVE-2026-33254
CVE.ORG link : CVE-2026-33254
JSON object : View
Products Affected
powerdns
- dnsdist
CWE
CWE-770
Allocation of Resources Without Limits or Throttling