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Vulnerabilities CVE-2026-48559

CVE-2026-48559

Medium
Open
TLP:CLEAR

Lightweight Music Server 3.76.0 Stored XSS via Media File Metadata Tags

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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.

Details

CVSS Score
5.1
EPSS Score
0.17%

6.8th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Confidence
90%
Published
Jun 1, 2026
Last Modified
Jul 28, 2026
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