An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-05.html