Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected products
- PowerDNS / Authoritative5.0.0 – 5.0.4
- PowerDNS / Authoritative4.9.0 – 4.9.14
- PowerDNS / DNSdist1.9.0 – 1.9.13
- PowerDNS / DNSdist2.0.0 – 2.0.4
- PowerDNS / Recursor5.4.0 – 5.4.1
- PowerDNS / Recursor5.3.0 – 5.3.6
- PowerDNS / Recursor5.2.0 – 5.2.9
References
- VENDOR_ADVISORYhttps://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-05.html
- VENDOR_ADVISORYhttps://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html
- VENDOR_ADVISORYhttps://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html