{"id":"CVE-2026-93008","aliases":[],"cve":{"records":[{"id":"CVE-2026-93008","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-17T14:35:34.562Z","published":"2026-10-29T12:33:22.941Z","modified":"2026-10-30T00:23:28.723Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-10-30T00:23:28.723Z"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-93008","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536079","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"}],"weaknesses":[{"id":"CWE-345","description":"Insufficient Verification of Data Authenticity","source":"redhat"}],"applicability":[],"prioritization":[]},"title":"Dnsmasq: dnsmasq: out-of-bailiwick cache injection through cname chase in split-dns configurations","titleSource":"redhat","descriptionSource":"redhat","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names.","score":6.8,"severity":"medium","published":"2026-10-29T12:33:22.941Z","modified":"2026-10-30T00:23:28.723Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Red Hat","name":"Red Hat Ceph Storage 9","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:ceph_storage:9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 6","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:6"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 7","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:7"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 8","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 5","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:5"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 5","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:5"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat OpenStack Platform 13 (Queens)","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openstack:13"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"},{"vendor":"Red Hat","name":"Red Hat OpenStack Platform 18.0","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openstack:18.0"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"}],"remediation":[{"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.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"}],"references":["https://access.redhat.com/security/cve/CVE-2026-93008","https://bugzilla.redhat.com/show_bug.cgi?id=2536079"],"sources":[{"name":"CVE","id":"CVE-2026-93008","modified":"2026-10-30T00:23:28.723Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N","score":6.8}],"sourceAffected":[],"observedAt":"2026-10-30T02:47:30.783Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T03:00:34.533Z"},"coverage":[{"source":"NVD","status":"no-result","checkedAt":"2026-10-29T12:45:40.407Z","attemptedAt":"2026-10-29T12:45:40.407Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-10-29T12:45:38.591Z","attemptedAt":"2026-10-29T12:45:38.591Z"},{"source":"EUVD","status":"refresh-failed","attemptedAt":"2026-10-29T12:45:39.270Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-29T12:45:38.210Z","attemptedAt":"2026-10-29T12:45:38.210Z"}],"evidence":[],"aiSummary":{"text":"A flaw in dnsmasq allows an attacker controlling an upstream DNS server to inject cache entries for unrelated names in split-DNS configurations. The weakness is due to insufficient verification of data authenticity. Affected products include various Red Hat Enterprise Linux and OpenShift Container Platform versions.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:18:50.322Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-93008"}]}}