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

Thu, 25 Jun 2026 22:45:00 +0000

Type Values Removed Values Added
First Time appeared Powerdns
Powerdns recursor
Vendors & Products Powerdns
Powerdns recursor

Thu, 25 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 25 Jun 2026 14:00:00 +0000

Type Values Removed Values Added
Description This fix provides extra hardening for the 5.4.x branch by doing extra validation of incoming answers from authoritative servers.
Title Reject more queries with invalid header values
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: OX

Published:

Updated: 2026-06-25T14:58:17.088Z

Reserved: 2026-04-27T08:53:58.839Z

Link: CVE-2026-42389

cve-icon Vulnrichment

Updated: 2026-06-25T14:57:57.948Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-25T22:30:15Z