CVE-2026-93008
MEDIUM
NVD
CVSS Score
6.8
Severity
MEDIUM
Published
Oct 29, 2026
Vendor
unknown
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.