CVE-2026-50045

MEDIUM CVSS 5.3 View on NVD ↗

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-50045.txt

Published: Jul 22, 2026 14:17 UTC Modified: Jul 22, 2026 20:33 UTC