# CVE-2026-111717: Arkon through 0.9.2 Missing Authorization via Skills Versions API

> Authenticated employees can bypass authorization checks to read other departments' skill version metadata, including hashes and storage paths.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA: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:** 16 Oct 2026
- **Updated:** 16 Oct 2026
- **Also known as:** GHSA-f92x-p3q7-cx4j

## What is CVE-2026-111717?

CVE-2026-111717 is a medium-severity missing authorization vulnerability in nduckmink arkon, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Arkon through 0.9.2 contains a missing authorization vulnerability in list_skill_versions that allows authenticated employees to read other departments' skill version metadata by bypassing the can_access_skill check. Attackers holding the default skill:read permission can request GET /api/skills/{slug}/versions for another department's skill to obtain version numbers, hashes, storage paths and changelogs.

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

## Which versions are affected by CVE-2026-111717?


## How do I fix CVE-2026-111717?

No fix has been published for CVE-2026-111717 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-111717 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111717 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-111717 and fix it if it is affected.

What it is: CVE-2026-111717 is a medium-severity missing authorization vulnerability in nduckmink arkon, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111717 exists.

Affected product: nduckmink arkon. 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-2026-111717/ (Markdown: https://insights.sbomify.com/CVE-2026-111717/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-111717
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-111717
- OSV: https://osv.dev/vulnerability/CVE-2026-111717

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-111717/
Summaries are generated and may contain mistakes; the official description above is the record.