Security Advisory

CVE-2026-50045

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-22 13:07:55

Last updated 2026-07-22 18:57:09

Assigner NLnet Labs

CVSS score 5.3

State PUBLISHED

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.

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