CVE-2026-33599

CVSS Score & Metrics

Base Score

3.1 / 10

Vector String

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

Vulnerability Description

A rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers request, when requested via either the autoUpgrade (Lua) option to newServer or auto_upgrade (YAML) settings. DDR upgrade is not enabled by default.

Vulnerability Details

Published Date

April 22, 2026

Last Modified

April 24, 2026

CWE ID

CWE-125

Source

NVD

Vendor

PowerDNS

Product

DNSdist

External References

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

CVSS Score & Metrics

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