CVE-2026-42052
Publication date 4 May 2026
Last updated 10 September 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| beets | 26.04 LTS resolute |
Fixed 2.5.1-4ubuntu0.1~esm1
|
| 24.04 LTS noble |
Fixed 1.6.0-8ubuntu0.1~esm1
|
|
| 22.04 LTS jammy |
Fixed 1.6.0-1ubuntu0.1~esm1
|
|
| 20.04 LTS focal |
Fixed 1.4.9-4ubuntu0.1~esm1
|
|
| 18.04 LTS bionic |
Fixed 1.4.6-2ubuntu0.1~esm1
|
|
| 16.04 LTS xenial |
Fixed 1.3.8+dfsg-2ubuntu0.1~esm1
|
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CVSS version: CVSS v4.0
Base score
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
References
Related Ubuntu Security Notices (USN)
- USN-8747-1
- Beets vulnerability
- 10 September 2026