CVE-2026-50233: Lyrion Music Server arbitrary directory listing via readdirectory query

CVE-2026-50233 · Severity: medium · CVSS 5.3 · Published 2026-06-05

Lyrion Music Server is a media management platform used to stream music across home networks. A security flaw allows anyone with network access to view the contents of any folder on the host computer's hard drive without needing a password. This could lead to the exposure of sensitive personal files, system configuration details, or other private data stored on the server.

Quick answers

Is CVE-2026-50233 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-50233 being exploited in the wild.
How severe is CVE-2026-50233?
Medium severity, with a CVSS score of 5.3, published 5 June 2026.
Which products and versions are affected?
Lyrion Music Server <= 9.2.0.
Is there a fix for CVE-2026-50233?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-50233 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-50233?
Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

Lyrion Music Server (formerly Logitech Media Server) contains an information exposure vulnerability (CWE-548) in its 'readdirectory' query. The vulnerability exists in both the CLI service (TCP port 9090) and the HTTP JSON-RPC endpoint (/jsonrpc.js). The query accepts a 'folder' parameter but fails to validate or restrict the path to configured media directories. Because the default configuration does not require authentication, a remote attacker can send crafted requests to list the contents of arbitrary directories on the underlying filesystem. This facilitates reconnaissance and the discovery of sensitive files, though it does not directly allow file downloads.

Affected products

  • Lyrion Music Server <= 9.2.0

Timeline

  • 2026-06-05: disclosed
  • 2026-06-05: advisory

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.