CVE-2026-50045 — 'max-global-quota' reset by DNSSEC validation restarts
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 pack…
Published: 2026-07-22 · CVSS: 5.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7