Insufficient Verification of Data Authenticity Affecting dnsmasq package, versions *


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.15% (5th percentile)

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  • Snyk IDSNYK-CENTOS6-DNSMASQ-21981615
  • published30 Oct 2026
  • disclosed28 Oct 2026

Introduced: 28 Oct 2026

NewCVE-2026-93008  (opens in a new tab)
CWE-345  (opens in a new tab)

How to fix?

There is no fixed version for Centos:6 dnsmasq.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dnsmasq package and not the dnsmasq package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

A flaw was found in dnsmasq. When following a CNAME in a DNS response, the resolver can cache records for the CNAME target without checking that those records belong to the responding server's authorized zone. In split-DNS deployments that send some domains to a specific upstream, an attacker who controls that upstream can inject cache entries for unrelated names. Later clients may then receive attacker-chosen addresses for those names.

CVSS Base Scores

version 3.1