What is CVE-2026-33260?

CVE-2026-33260 is a medium-severity vulnerability in Powerdns Authoritative, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-04-22.

How severe is CVE-2026-33260?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Powerdns Authoritative

CVE-2026-33260

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.

Published 2026-04-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.011 (63.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.011 · change: +0.005

Affected products

Powerdns Authoritative — versions 5.0.0, 4.9.0
Powerdns Dnsdist — versions 1.9.0, 2.0.0
Powerdns Recursor — versions 5.4.0, 5.3.0, 5.2.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-05.h… (Vendor Advisory)
www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html (Vendor Advisory)
docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-… (Broken Link, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33260?: CVE-2026-33260 is a medium-severity vulnerability in Powerdns Authoritative, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-04-22.
How severe is CVE-2026-33260?: Medium severity. CVSS v3 base score is 5.3 out of 10.