# CVE-2026-107445: Rubygem-katello: katello: katello: katello flatpak remote repositories api cross-organization authorization bypass

> Authenticated users can bypass organization boundaries to read or modify flatpak remote repository data across different organizations.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Oct 2026
- **Updated:** 29 Oct 2026
- **Also known as:** GHSA-64g2-rj4q-r59g

## What is CVE-2026-107445?

CVE-2026-107445 is a medium-severity missing authorization vulnerability in Red Hat Hardened Images, published on 8 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A flaw was found in Katello where the Flatpak Remote Repositories API does not properly enforce authorization when accessing a flatpak remote repository by identifier. An authenticated user with permission to view flatpak remotes in one organization may be able to access flatpak remote repository information belonging to another organization. The same unscoped lookup is used by the mirror action, which may allow creating a repository in a product the user can edit that is configured with another organization's flatpak remote URL and stored remote credentials.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-107445?


## How do I fix CVE-2026-107445?

No fix has been published for CVE-2026-107445 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-107445 being exploited?

There is no known exploitation of CVE-2026-107445 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-107445 and fix it if it is affected.

What it is: CVE-2026-107445 is a medium-severity missing authorization vulnerability in Red Hat Hardened Images, published on 8 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-107445 in the wild and no public exploit code.

Affected product: Red Hat Hardened Images. 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-2026-107445/ (Markdown: https://insights.sbomify.com/CVE-2026-107445/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-107445
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-107445
- OSV: https://osv.dev/vulnerability/CVE-2026-107445

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-107445/
Summaries are generated and may contain mistakes; the official description above is the record.