Cross-Site Scripting (XSS) in beets
Summary
Cross-site scripting in beets (CVE-2026-42052). Risk of unauthorized operations or information disclosure. Exploitable via title. Mitigation: upgrade to 2.10.0 or later.
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-42052 has been found in beets.
Attackers can target a specific entry point like title over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade beets to 2.10.0 or later.
If unsure, ask your IT team or search "beets CVE-2026-42052" on the vendor's site.
CVE-2026-42052 (beets) — CWE-79
Attack surface: title / lyrics / comments
Patched: 2.10.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in beets. Attackers reach the vulnerable code path via title.
Check the vendor advisory for the affected versions of beets. Attack surface: title / lyrics / comments.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 2.10.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'beets' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1
Identify exposureidentify
grep -r 'beets' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
beetsを grep し、稼働しているサービス・バージョンを把握する。 -
2
Apply patchpatch
Upgrade beets to 2.10.0ステージング環境で 2.10.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3
Post-deployment verificationverify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
| Ecosystem | Package | Affected | Fixed |
|---|---|---|---|
| pip | beets |
< 2.10.0 |
2.10.0 |
| PyPI | beets |
< 2.10.0 |
2.10.0 |
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-42052 beets
- Ubuntu UBUNTU-CVE-2026-42052 beets
Original description The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD GitHub Advisory
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- web github.com
- web lists.debian.org
- web github.com