CVE-2026-50045 — 'max-global-quota' reset by DNSSEC validation restarts

CVE-2026-50045

'max-global-quota' reset by DNSSEC validation restarts PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
NLnet Labs / Unbound	affected 1.22.0 before 1.25.2

CWE

CWE-406

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.