PowerDNS CVE-2026-33257

| EUVD-2026-24720 MEDIUM
2026-04-22 [email protected] GHSA-p687-4q66-wh3p
Denial Of Service
5.3
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Apr 22, 2026 - 13:09 vuln.today
Patch available
Apr 22, 2026 - 11:16 EUVD

DescriptionNVD

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.

AnalysisAI

Unlimited memory allocation in PowerDNS internal web server allows remote denial of service via crafted web requests. The vulnerability affects multiple PowerDNS products (dnsdist, Authoritative, and Recursor) across multiple versions, though the internal web server is disabled by default, significantly limiting real-world exposure. …

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CVE-2026-33257 vulnerability details – vuln.today
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