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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Satellite 6.16 for RHEL 8 | — | — |
| Red Hat | Red Hat Satellite 6.16 for RHEL 9 | — | — |
| Red Hat | Red Hat Satellite 6.17 for RHEL 9 | — | — |
| Red Hat | Red Hat Satellite 6.18 for RHEL 9 | — | — |
| Red Hat | Red Hat Satellite 6.19 for RHEL 9 | — | — |
| Red Hat | Red Hat Satellite 6 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Satellite Utils 6 | foreman +1 | 3.12.0.23-1.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite Utils 6 | rubygem-hammer_cli | 3.12.0-2.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite Utils 6 | satellite +1 | 6.16.14-1.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite Capsule 6 | foreman +2 | 3.12.0.23-1.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite Capsule 6 | pulpcore-obsolete-packages | 1.3.1-6.el9pc | RHSA-2026:74504 |
| Red Hat Satellite Capsule 6 | python-dynaconf +1 | 3.2.13-1.el8pc | RHSA-2026:74506, RHSA-2026:74505 |
| Red Hat Satellite Capsule 6 | python-gitpython +1 | 3.1.62-1.el8pc | RHSA-2026:74506, RHSA-2026:74505 |
| Red Hat Satellite Capsule 6 | python-lxml +1 | 4.9.2-5.el8pc | RHSA-2026:74506, RHSA-2026:74505 |
| Red Hat Satellite Capsule 6 | python-pulpcore +1 | 3.49.39-4.el8pc | RHSA-2026:74506 |
| Red Hat Satellite Capsule 6 | python-sqlparse +1 | 0.6.0-1.el8pc | RHSA-2026:74506, RHSA-2026:74505 |
| Red Hat Satellite Capsule 6 | python3.12-dynaconf | 3.2.13-2.el9pc | RHSA-2026:74504, RHSA-2026:74503 |
| Red Hat Satellite Capsule 6 | python3.12-gitpython | 3.1.62-1.el9pc | RHSA-2026:74504, RHSA-2026:74503 |
| Red Hat Satellite Capsule 6 | python3.12-sqlparse | 0.6.0-1.el9pc | RHSA-2026:74504, RHSA-2026:74503 |
| Red Hat Satellite Capsule 6 | satellite +2 | 6.16.14-1.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite Capsule 6 | satellite-obsolete-packages | 6.17.12-1.el9sat | RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite 6 | foreman +14 | 3.12.0.23-1.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite 6 | pulpcore-obsolete-packages | 1.3.1-6.el9pc | RHSA-2026:74504 |
| Red Hat Satellite 6 | python-dynaconf +1 | 3.2.13-1.el8pc | RHSA-2026:74506, RHSA-2026:74505 |
| Red Hat Satellite 6 | python-gitpython +1 | 3.1.62-1.el8pc | RHSA-2026:74506, RHSA-2026:74505 |
| Red Hat Satellite 6 | python-lxml +1 | 4.9.2-5.el8pc | RHSA-2026:74506, RHSA-2026:74505 |
| Red Hat Satellite 6 | python-pulpcore +1 | 3.49.39-4.el8pc | RHSA-2026:74506 |
| Red Hat Satellite 6 | python-sqlparse +1 | 0.6.0-1.el8pc | RHSA-2026:74506, RHSA-2026:74505 |
| Red Hat Satellite 6 | python3.12-dynaconf | 3.2.13-2.el9pc | RHSA-2026:74504, RHSA-2026:74503 |
| Red Hat Satellite 6 | python3.12-gitpython | 3.1.62-1.el9pc | RHSA-2026:74504, RHSA-2026:74503 |
| Red Hat Satellite 6 | python3.12-sqlparse | 0.6.0-1.el9pc | RHSA-2026:74504, RHSA-2026:74503 |
| Red Hat Satellite 6 | rubygem-foreman_remote_execution +1 | 13.2.8-2.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite 6 | rubygem-hammer_cli | 3.12.0-2.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite 6 | rubygem-katello | 4.14.0.23-1.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite 6 | rubygem-safemode | 1.5.0-2.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite 6 | satellite +2 | 6.16.14-1.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite 6 | satellite-obsolete-packages | 6.17.12-1.el9sat | RHSA-2026:74505, RHSA-2026:74504 |
| Red Hat Satellite 6 | yggdrasil-worker-forwarder | 0.1.0-2.el8sat | RHSA-2026:74506, RHSA-2026:74505, RHSA-2026:74504 |
Advisories 5
- WID-SEC-2026-3712 Foreman: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- RHSA-2026:74506 Red Hat Security Advisory: Satellite 6.16.14 Async Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:74504 Red Hat Security Advisory: Satellite 6.18.10 Async Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:74505 Red Hat Security Advisory: Satellite 6.17.12 Async Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:74503 Red Hat Security Advisory: Satellite 6.19.5 Async Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
References
- RHSA-2026:74503 vendor-advisory
- RHSA-2026:74504 vendor-advisory
- RHSA-2026:74505 vendor-advisory
- RHSA-2026:74506 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-12423 vdb-entry
- RHBZ#2488956 issue-tracking