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

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

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 1 Oct 2026
- **Updated:** 7 Oct 2026
- **Also known as:** GHSA-6m3j-qcjr-3vqm

## 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 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-12423?

It affects 2 products.


Products: Redhat Satellite, Theforeman Foreman.

## How do I fix CVE-2026-12423?

Apply the vendor's patch.

## Is CVE-2026-12423 being exploited?

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

## Other vulnerabilities in Redhat Satellite

- [CVE-2024-7012](https://insights.sbomify.com/CVE-2024-7012/): Puppet-foreman: an authentication bypass vulnerability exists in foreman (critical 9.8)
- [CVE-2024-7923](https://insights.sbomify.com/CVE-2024-7923/): Puppet-pulpcore: an authentication bypass vulnerability exists in pulpcore (critical 9.8)
- [CVE-2026-96659](https://insights.sbomify.com/CVE-2026-96659/): Foreman: excessive permissions for viewer role on preview (critical 9.1)
- [CVE-2023-0118](https://insights.sbomify.com/CVE-2023-0118/): Foreman: arbitrary code execution through templates (critical 9.1)
- [CVE-2008-2369](https://insights.sbomify.com/CVE-2008-2369/): Hardcoded credentials in n/a (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12423 and fix it if it is affected.

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

Affected product: Redhat Satellite. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-12423/ (Markdown: https://insights.sbomify.com/CVE-2026-12423/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12423
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12423
- OSV: https://osv.dev/vulnerability/CVE-2026-12423

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-12423/
Summaries are generated and may contain mistakes; the official description above is the record.