CVE-2026-33257

HighCVSS 7.5/10Last modified Oct 26, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-770

Affected software

Vendor	Product	Versions
PowerDNS	Authoritative	>= 5.0.0, < 5.0.4; >= 4.9.0, < 4.9.14
PowerDNS	DNSdist	>= 1.9.0, < 1.9.13; >= 2.0.0, < 2.0.4
PowerDNS	Recursor	>= 5.4.0, < 5.4.1; >= 5.3.0, < 5.3.6; >= 5.2.0, < 5.2.9

References

https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-05.htmlVendor Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.htmlBroken Link, Vendor Advisory
https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.htmlVendor Advisory

Timeline

Published: Apr 22, 2026
Last modified: Oct 26, 2026
NVD status: Analyzed

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