CVE-2026-50045
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Jul 22, 2026
Vendor
unknown
Description
In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a single client query for a deeply nested name under a DNSSEC-signed parent can cause Unbound to send more upstream packets per client query than the configured 'max-global-quota'. This effectively bypasses a security configuration that limits upstream amplification traffic.