5.3

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 packets per client query than the configured 'max-global-quota'. This effectively bypasses a security configuration that limits upstream amplification traffic.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nlnetlabs ≫ Unbound Version >= 1.22.0 < 1.25.2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.28% 0.2
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
sep@nlnetlabs.nl 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-406 Insufficient Control of Network Message Volume (Network Amplification)

The product does not sufficiently monitor or control transmitted network traffic volume, so that an actor can cause the product to transmit more traffic than should be allowed for that actor.

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