CVE-2026-42052CWE-79

beets is Vulnerable to XSS

Medium · published May 4, 2026

CVSS v4.0
6.0
EPSS
1%
Percentile
43.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.0 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00529 · 43.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-05-04T17:06Z
EPSS history
Timeline
  • 04 MAY 17:06Z
    beets is Vulnerable to XSS
    cvelistv5