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CVE-2026-50045

5.3 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.3 · nlnetlabsNVD modified 2026-10-24 13:10

Affected (CPE criteria) 1

  • cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*

References 1