CVE-2026-12423
published 2026-10-01CVE-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…
PriorityP353high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
EPSS
0.36%
28.9th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| redhat | satellite | — | — |
| redhat | satellite | >= 6.16 < 6.16.4 | 6.16.4 |
| redhat | satellite | >= 6.17 < 6.17.12 | 6.17.12 |
| redhat | satellite | >= 6.18 < 6.18.10 | 6.18.10 |
| redhat | satellite | >= 6.19 < 6.19.5 | 6.19.5 |
| satellite_el8 | foreman | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
vendor_redhat7.5HIGH
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GHSA
A flaw was found in Foreman.
ghsa_unreviewed·2026-10-01
CVE-2026-12423 [HIGH] CWE-306 A flaw was found in Foreman.
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.
Red Hat
foreman: unauthenticated information disclosure via provisioning token validation flaw
vendor_redhat·2026-10-01·CVSS 7.5
CVE-2026-12423 [HIGH] CWE-306 foreman: unauthenticated information disclosure via provisioning token validation flaw
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.
Statement: Successful exploitation of this issue allows an an unauthenticated remote attacker to actively poll the endpoint for a host entering a build state
No detection rules found.
No public exploits indexed.
https://access.redhat.com/errata/RHSA-2026:74503https://access.redhat.com/errata/RHSA-2026:74504https://access.redhat.com/errata/RHSA-2026:74505https://access.redhat.com/errata/RHSA-2026:74506https://access.redhat.com/security/cve/CVE-2026-12423https://bugzilla.redhat.com/show_bug.cgi?id=2488956http://www.openwall.com/lists/oss-security/2026/10/07/10
2026-10-01
Published