CVE-2026-12423
Foreman: unauthenticated information disclosure via provisioning token validation flaw
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.
Fixes and workarounds
Workaround
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Red Hat Satellite 6.16 for RHEL 8 Red Hat foreman
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.12.0.23-1.el8sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6.16 for RHEL 9 Red Hat foreman
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.12.0.23-1.el9sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6.17 for RHEL 9 Red Hat foreman
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.14.0.22-1.el9sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6.18 for RHEL 9 Red Hat foreman
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.16.0.25-1.el9sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6.19 for RHEL 9 Red Hat foreman
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.18.0.14-1.el9sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6 Red Hat satellite:el8/foreman
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/errata/RHSA-2026:74503CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:74504CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:74505CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:74506CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-12423CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2488956CNA: redhat · issue-tracking, x_refsource_REDHAT
- http://www.openwall.com/lists/oss-security/2026/10/07/10ADP: CVE
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