{"affected":[{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhceph/alloy-rhel10","product":"Red Hat Ceph Storage 9","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"dnsmasq","product":"Red Hat Enterprise Linux 10","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"dnsmasq","product":"Red Hat Enterprise Linux 6","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"dnsmasq","product":"Red Hat Enterprise Linux 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"dnsmasq","product":"Red Hat Enterprise Linux 8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"dnsmasq","product":"Red Hat Enterprise Linux 9","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift4/ose-baremetal-runtimecfg-rhel8","product":"Red Hat OpenShift Container Platform 4","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift4/ose-baremetal-runtimecfg-rhel9","product":"Red Hat OpenShift Container Platform 4","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift/ose-rhel-coreos-8","product":"Red Hat OpenShift Container Platform 4","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift/ose-rhel-coreos-9","product":"Red Hat OpenShift Container Platform 4","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift5/ose-baremetal-runtimecfg-rhel9","product":"Red Hat OpenShift Container Platform 5","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift/ose-rhel-coreos-9","product":"Red Hat OpenShift Container Platform 5","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"dnsmasq","product":"Red Hat OpenStack Platform 13 (Queens)","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhoso-operators/infra-rhel9-operator","product":"Red Hat OpenStack Platform 18.0","source":"CNA: redhat","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2026-93008","cwes":["CWE-345"],"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.","epss":{"date":"2026-11-04","percentile":0.04169,"score":0.0015},"exploits":[],"kev":null,"metrics":[{"score":6.8,"severity":"medium","source":"CNA: redhat","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N","version":"3.1"},{"score":6.8,"severity":"medium","source":"NVD: secalert@redhat.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N","version":"3.1"}],"modifiedAt":1793837401240,"publishedAt":1793277202941,"references":[{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-93008"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536079"},{"source":"secalert@redhat.com","tags":[],"url":"https://access.redhat.com/security/cve/CVE-2026-93008"},{"source":"secalert@redhat.com","tags":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536079"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"The following measures reduce risk:\n\n1. Do not point server=/domain/ at untrusted or attacker-reachable DNS servers.\n2. Restrict dnsmasq to communicate only with trusted upstream resolvers at the firewall.\n3. For local=/domain/ zones, define all names that should be served locally.\n4. Do not rely on --dnssec to mitigate this for unsigned zones. Insecure records are still cached."}],"revision":"8a79f2901b97d8a0d6cbd9041ffd95e04db0684416f6911207d7f878afa72a39","sources":[{"modifiedAt":1793837401240,"name":"CNA: redhat","retrievedAt":1793840924957,"url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"modifiedAt":1793722657930,"name":"NVD","retrievedAt":1793729907552,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93008"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793840927204,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93008"}],"ssvc":{"assessedAt":1793719625645,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Dnsmasq: dnsmasq: out-of-bailiwick cache injection through cname chase in split-dns configurations","updatedAt":1793840927204}