CVE-2026-12423 Foreman: unauthenticated information disclosure via provisioning token validation flaw

High 7.5 Published 1 Oct 2026 Updated 7 Oct 2026

Unauthenticated attackers can access kickstart templates by exploiting a logic flaw in provisioning token validation, leading to information disclosure.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-12423?

CVE-2026-12423 is a high-severity authentication bypass vulnerability in Redhat Satellite, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-306

Which versions are affected by CVE-2026-12423?

It affects 2 products.

Products include Redhat Satellite, Theforeman Foreman.

How do I fix CVE-2026-12423?

Apply the vendor's patch.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-12423 being exploited?

There is no known exploitation of CVE-2026-12423 in the wild and no public exploit code.

All Redhat Satellite vulnerabilities

Sources

Also known as GHSA-6m3j-qcjr-3vqm.