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CVE-2026-0398

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

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

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

Affected software

Vendor	Product	Versions
PowerDNS	Recursor	>= 5.3.0, < 5.3.5; >= 5.2.0, < 5.2.8; >= 5.1.0, < 5.1.10

References

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2026-01.htmlVendor Advisory

Timeline

Published: Feb 9, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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