CVE-2026-93008: medium-severity vulnerability in Red Hat Ceph Storage 9
Dnsmasq: dnsmasq: out-of-bailiwick cache injection through cname chase in split-dns configurations
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.1%
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:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
Affected products
Red Hat · Red Hat Ceph Storage 9Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat OpenShift Container Platform 4Red Hat · Red Hat OpenShift Container Platform 5Red Hat · Red Hat OpenStack Platform 13 (Queens)Red Hat · Red Hat OpenStack Platform 18.0Related CVEs — Red Hat Ceph Storage 9
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