{"cve":"CVE-2026-42052","nvd":{"published":"2026-05-04T18:16:30.063","modified":"2026-10-26T19:10:00.163","status":"Deferred","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.","cvss_v4":{"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","score":6.0},"cvss_v3":null,"cwes":["CWE-79"],"references":["https://github.com/beetbox/beets/releases/tag/v2.10.0","https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847","https://lists.debian.org/debian-lts-announce/2026/06/msg00030.html"],"products":[],"source":"nvd","synced_at":"2026-10-26T19:31:02.781428341+00:00"},"epss":{"cve":"CVE-2026-42052","score":0.003,"percentile":0.22557,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-3gxm-wfjx-m847","url":"https://osv.dev/vulnerability/GHSA-3gxm-wfjx-m847","summary":"beets has a Cross-site Scripting vulnerability","modified":"2026-07-13T16:43:02.903245880Z","packages":[{"ecosystem":"PyPI","name":"beets","purl":"pkg:pypi/beets","ranges":["<2.10.0"],"fixed":["2.10.0"]}]},{"id":"PYSEC-2026-2397","url":"https://osv.dev/vulnerability/PYSEC-2026-2397","summary":"beets has a Cross-site Scripting vulnerability","modified":"2026-07-13T16:31:38.628627327Z","packages":[{"ecosystem":"PyPI","name":"beets","purl":"pkg:pypi/beets","ranges":["<2.10.0"],"fixed":["2.10.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}