CVE-2026-12423
Foreman: unauthenticated information disclosure via provisioning token validation flaw
CVSS Score
7.5
EPSS Score
0.4%
EPSS Percentile
30th
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.
| CWE | CWE-306 |
| Vendor | red hat |
| Product | red hat satellite 6.16 for rhel 8 |
| Published | Oct 1, 2026 |
| Last Updated | Oct 7, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
Red Hat / Red Hat Satellite 6.16 for RHEL 8
All versions affected Red Hat / Red Hat Satellite 6.16 for RHEL 9
All versions affected Red Hat / Red Hat Satellite 6.17 for RHEL 9
All versions affected Red Hat / Red Hat Satellite 6.18 for RHEL 9
All versions affected Red Hat / Red Hat Satellite 6.19 for RHEL 9
All versions affected Red Hat / Red Hat Satellite 6
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:74503 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:74504 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:74505 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:74506 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-12423 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2488956 openwall.com: http://www.openwall.com/lists/oss-security/2026/10/07/10
Credits
This issue was discovered by Laura Pardo (Red Hat) and Toni Gornals (Red Hat).