Medium 5.4Published Jun 1, 2026

CVE-2026-48559Lightweight Music Server 3.76.0 Stored XSS via Media File Metadata Tags

Updated under an hour ago (Oct 27, 2026, 3:50 AM ET)

Does this affect you?

It affects epoupon lms. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for epoupon lms

Exploited in the last 30 days

Lightweight Music Server (LMS) though 3.76.0 contains a stored cross-site scripting vulnerability that allows attackers to execute arbitrary JavaScript by embedding malicious HTML in media file metadata tags such as GENRE, ARTIST, or ALBUM. Attackers can introduce a crafted media file into the victim's library, causing the payload to be saved during library scanning and executed automatically in the web interface due to tag content being rendered using Wt::TextFormat::UnsafeXHTML without sanitization in src/lms/ui/Utils.cpp.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jul 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

epoupon lms epoupon:lms (from the name)	through 3.76.0	CNA record

References

References

https://www.zeroscience.mk/#/advisories/ZSL-2026-5987	technical-description, exploit
https://github.com/epoupon/lms/issues/844	issue-tracking
https://github.com/epoupon/lms/milestone/94
https://www.vulncheck.com/advisories/lightweight-music-server-stored-xss-via-media-file-metadata-tags	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.