CVE-2026-0398 MEDIUM

CVE-2026-0398: Crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in Recursor

Vendor Powerdns
Product Recursor
Published February 9, 2026
Last update February 9, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in Recursor.

Key dates

02Disclosure timeline

February 9, 2026 CVE published
February 9, 2026 Record updated