CVE-2026-93008 - Dnsmasq: dnsmasq: out-of-bailiwick cache injection through cname chase in split-dns configurations

CVE-2026-93008 - Dnsmasq: dnsmasq: out-of-bailiwick cache injection through cname chase in split-dns configurations

https://cvefeed.io/rssfeed/latest.atom / Thu, 10/29/2026 - 16:12
CVE ID :CVE-2026-93008
Published : Oct. 29, 2026, 12:33 p.m. | 41 minutes ago
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.
Severity: 6.8 | MEDIUM
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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.