Incomplete domain name sanitization during

published 2026-04-22 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-24945

cvss: 7.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits: 0; none known

An attacker can send a notify request that causes a new secondary domain to be added to the bind backend, but causes said backend to update its configuration to an invalid one, leading to the backend no longer able to run on the next restart, requiring manual operation to fix it.

Patch / fix

fixed in 1 distros 2

PowerDNS Authoritative 4.9.14, 5.0.4

debian alpine

pdns Debian 13 4.9.14-0+deb13u1
pdns Debian 14 5.0.4-1

debian advisories DEBIAN-CVE-2026-33608

pdns Alpine 3.24, Alpine 3.23 5.0.4-r0

alpine advisories ALPINE-CVE-2026-33608

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 6 mo ago (2026-04-22)

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.4	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

PowerDNS Authoritative

Classification

Weakness

CWE-94 Improper Control of Generation of Code

References

docs.powerdns.com /authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html
broken-link, vendor-advisory

Sources

CVE List CVE-2026-33608
NVD CVE-2026-33608

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary