Auth bypass in Red Hat Satellite 6
CVE-2026-12423
A flaw was found in Foreman. The Red Hat Satellite /unattended/provision API endpoint is vulnerable to an authentication bypass due to a semantic logic flaw in host_verifier.rb. The application verifies the database state of a provisioning token rather than its actual presence in the incoming HTTP request. Because a host actively undergoing provisioning has an unexpired token in the database, the server's valid_host_token? method evaluates to true, granting access to the kickstart template even if the requester provides no token at all in the URL.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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)
References
- access.redhat.com/errata/RHSA-2026:74503 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-12423 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:74504 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:74506 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-12423?
- CVE-2026-12423 is a high-severity vulnerability in Red Hat Satellite 6, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-10-01.
- How severe is CVE-2026-12423?
- High severity. CVSS v3 base score is 7.5 out of 10.