CVE-2026-93008

MEDIUM

MEDIUM Priority: 0.00 BB Relevance: 64/100

Published: 2026-10-29 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network

AC: High

PR: None

UI: None

S: Changed

C: None

I: High

A: None

Description

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.