CVE-2026-42390
Medium
Description
An invalid zone might pass ZONEMD validation while it should not. This is only relevant if ZoneToCache is configured with ZONEMD validation.
SeverityMedium
CVSS5.3
Exploit probability—
ProductRecursor
PublishedJun 25, 2026
First seenJun 25, 2026
Weakness typeCWE-20Improper input validation
How to fix
Update
- PowerDNS Recursor5.4.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| PowerDNS Recursor | 5.4.0 ≤ v < 5.4.3 | 5.4.3 |
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