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CVE-2026-12423

7.5 · HIGH

A flaw was found in Foreman.

Published Oct 1, 2026redhatCWE-306EPSS 0.38%

Overview

CVE-2026-12423 is a high-severity vulnerability affecting redhat satellite. It was published on October 1, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from redhat. Update satellite to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
redhatsatellite>= 6.16, < 6.16.4Affected

References

Refaccess.redhat.com/errata/RHSA-2026:74503Refaccess.redhat.com/errata/RHSA-2026:74504Refaccess.redhat.com/errata/RHSA-2026:74505Refaccess.redhat.com/errata/RHSA-2026:74506Refaccess.redhat.com/security/cve/CVE-2026-12423Refbugzilla.redhat.com/show_bug.cgi?id=2488956Refwww.openwall.com/lists/oss-security/2026/10/07/10

How CyberStrike helps

Frequently asked questions

What is CVE-2026-12423?

CVE-2026-12423 is a high-severity vulnerability affecting redhat satellite. It was published on October 1, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-12423?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-12423?

Check the references section for vendor advisories and patches from redhat. Update satellite to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-12423?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-12423 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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