Insufficient Verification of Data Authenticity Affecting unbound-munin package, versions <0:1.25.2-0.1.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-RHEL10-UNBOUNDMUNIN-18980828
  • published20 Aug 2026
  • disclosed22 Jul 2026

Introduced: 22 Jul 2026

NewCVE-2026-50248  (opens in a new tab)
CWE-345  (opens in a new tab)

How to fix?

Upgrade RHEL:10 unbound-munin to version 0:1.25.2-0.1.hum1 or higher.
This issue was patched in RHSA-2026:43588.

NVD Description

Note: Versions mentioned in the description apply only to the upstream unbound-munin package and not the unbound-munin package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, when an auth/rpz zone has a configured primary hostname that resolves to BOGUS A/AAAA, it is still considered as a possible XFR endpoint. A malicious actor that can spoof the hostname's A/AAAA record (no valid RRSIG required) becomes the zone's XFR primary and can replaces the entire zone/the resolver's entire response policy.

CVSS Base Scores

version 3.1