CVE-2026-33260: Insufficient input validation of internal webserver
Published Apr 22, 2026
·Updated
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.
Affected Software
7 affected components
PowerDNS Authoritative>=4.9.0<4.9.14
PowerDNS Authoritative>=5.0.0<5.0.4
PowerDNS DNSDist>=1.9.0<1.9.13
PowerDNS DNSDist>=2.0.0<2.0.4
PowerDNS recursor>=5.2.0<5.2.9
PowerDNS recursor>=5.3.0<5.3.6
PowerDNS recursor=5.4.0
Event History
Apr 22, 2026
CVE Published
via MITRE·09:39 AM
Data Sourced
via MITRE·09:39 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-33260?
The severity of CVE-2026-33260 is high with a score of 7.5.
2
How do I fix CVE-2026-33260?
To fix CVE-2026-33260, ensure that the internal web server is disabled and monitor for updates from PowerDNS.
3
What systems are affected by CVE-2026-33260?
CVE-2026-33260 affects PowerDNS recursor, PowerDNS Authoritative, and PowerDNS DNSDist.
4
What type of attack does CVE-2026-33260 enable?
CVE-2026-33260 enables an attacker to perform a denial of service attack through unlimited memory allocation.
5
Is the internal web server enabled by default in CVE-2026-33260?
No, the internal web server is disabled by default in CVE-2026-33260.