CVE-2026-42000: Powerdns Authoritative

High severity, CVSS 8.6. EPSS: 0.5% chance of exploitation in the next 30 days.

Insufficient Validation of Names During AXFR

Affected products

• Powerdns Authoritative: before 4.9.15 (fixed in 4.9.15); from 5.0.0, before 5.0.5 (fixed in 5.0.5)

Published 2026-05-21. Last modified 2026-07-23.