CVE-2026-50045 Affecting unbound package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.28% (20th percentile)

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  • Snyk IDSNYK-DEBIAN13-UNBOUND-18228243
  • published23 Jul 2026
  • disclosed22 Jul 2026

Introduced: 22 Jul 2026

CVE-2026-50045  (opens in a new tab)

How to fix?

There is no fixed version for Debian:13 unbound.

NVD Description

Note: Versions mentioned in the description apply only to the upstream unbound package and not the unbound package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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 Base Scores

version 3.1