CVE-2026-42052

beets is Vulnerable to XSS

MEDIUM
6
CVSS Score
Published: May 4, 2026 at 05:06 PM UTC
Updated: October 26, 2026 at 07:10 PM UTC
1 product affected across 1 vendorBeets

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Severity
MEDIUM6
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Beets is the media library management system. Prior to version 2.10.0, the bundled web UI uses Underscore template interpolation mode <%= ... %> for untrusted metadata fields. In this runtime, <%= ... %> is raw insertion and HTML escaping is only performed by <%- ... %>. Rendered output is then inserted with .html(...), allowing attacker-controlled markup to become active DOM. This issue has been patched in version 2.10.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.10.0
Affected range stops below 2.10.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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