CVE-2026-50231 Lyrion Music Server 9.2.0 Unauthenticated Stored XSS via server.log
Attackers can inject malicious scripts into the log viewer via unescaped parameters, leading to arbitrary script execution in users' browsers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-50231?
CVE-2026-50231 is a medium-severity cross-site scripting vulnerability in LMS Community Lyrion Music Server, published on 5 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Lyrion Music Server 9.2.0 contains an unauthenticated stored cross-site scripting vulnerability in the log viewer that allows attackers to inject malicious scripts by exploiting unescaped template variables. Attackers can inject XSS payloads through search, lines, and path query parameters or by crafting values that get logged such as URLs, User-Agent headers, stream titles, or player names to execute arbitrary scripts in users' browsers.
Weakness: CWE-79
Which versions are affected by CVE-2026-50231?
How do I fix CVE-2026-50231?
No fix has been published for CVE-2026-50231 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-50231 being exploited?
There is no known exploitation of CVE-2026-50231 in the wild and no public exploit code.
Sources
Also known as GHSA-4hhv-5h2w-9qm2.