CVE-2026-12423
The Red Hat Satellite /unattended/provision API endpoint is vulnerable to an authentication bypass due to a semantic logic flaw in host_verifier.rb.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.38% probability · 32th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Affected
- redhat/satellite · theforeman/foreman
- Source
- secalert@redhat.com
EPSS moved from 0.4% on 2 October 2026 to 0.4% on 26 October 2026.
References
- https://access.redhat.com/errata/RHSA-2026:74503Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:74504Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:74505Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:74506Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-12423Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2488956Issue Tracking, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/10/07/10Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.