Name: CVE-2026-42389: Improper Input Validation
Creator: Rapid7
Published: 2026-06-25T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-42389, CWE-20, CVSS 5.3, EPSS 0.00299

This fix provides extra hardening for the 5.4.x branch by doing extra validation of incoming answers from authoritative servers.

CVSS Details

CVSS 3.1 Base Score: 5.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Freebsd	—	Upgrade powerdns-recursor	Jun 30, 2026	Jun 29, 2026

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CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence