QwikSec

Security Database

CVE

CWE

Training

CVE-2026-48559

Published: Jun 1, 2026

Modified: Jun 1, 2026

PUBLISHED

CVSS v3.1

5.4

MEDIUM

Description

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.

Vendor	Product	Versions
epoupon	lms	affected `0 - <= 3.76.0`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

References

https://www.zeroscience.mk/#/advisories/ZSL-2026-5987

technical-description

exploit

https://github.com/epoupon/lms/issues/844

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

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