What is CVE-2026-93008?

CVE-2026-93008 is a medium-severity vulnerability in Red Hat Ceph Storage 9, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.8/10. Published 2026-10-29.

How severe is CVE-2026-93008?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Red Hat Ceph Storage 9

CVE-2026-93008

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.

Published 2026-10-29 · last modified 2026-10-30.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

access.redhat.com/security/cve/CVE-2026-93008 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)

Frequently asked questions

What is CVE-2026-93008?: CVE-2026-93008 is a medium-severity vulnerability in Red Hat Ceph Storage 9, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.8/10. Published 2026-10-29.
How severe is CVE-2026-93008?: Medium severity. CVSS v3 base score is 6.8 out of 10.