# CVE-2026-50233: Lyrion Music Server 9.2.0 Arbitrary Directory Listing

> Unauthenticated attackers can enumerate arbitrary directories on the host filesystem via the readdirectory query in Lyrion Music Server.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jun 2026
- **Updated:** 9 Jun 2026
- **Also known as:** GHSA-36hm-c9f8-f8xc

## What is CVE-2026-50233?

CVE-2026-50233 is a medium-severity path traversal vulnerability in LMS Community Lyrion Music Server, published on 5 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Lyrion Music Server 9.2.0 contains an arbitrary directory listing vulnerability in its readdirectory query, exposed through both the CLI service (TCP port 9090) and the HTTP JSON-RPC endpoint (/jsonrpc.js). The query accepts a folder parameter and lists its contents with no restriction to the configured media directories and no authentication in the default configuration, allowing a remote, unauthenticated attacker to enumerate arbitrary locations on the host filesystem.

Weakness: CWE-548 (Exposure of Information Through Directory Listing)

## Which versions are affected by CVE-2026-50233?


## How do I fix CVE-2026-50233?

No fix has been published for CVE-2026-50233 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-50233 being exploited?

There is no known exploitation of CVE-2026-50233 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-50233 and fix it if it is affected.

What it is: CVE-2026-50233 is a medium-severity path traversal vulnerability in LMS Community Lyrion Music Server, published on 5 Jun 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-2026-50233 in the wild and no public exploit code.

Affected product: LMS Community Lyrion Music Server. 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-2026-50233/ (Markdown: https://insights.sbomify.com/CVE-2026-50233/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-50233
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-50233
- OSV: https://osv.dev/vulnerability/CVE-2026-50233

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-50233/
Summaries are generated and may contain mistakes; the official description above is the record.