UBUNTU-CVE-2026-42052

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    UBUNTU-CVE-2026-42052

    Published: 4 May 2026Last Modified: 10 Sept 2026
    Upstream:
    CVE-2026-42052
    Aliases:
    USN-8747-1

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2026-42052, https://www.cve.org/CVERecord?id=CVE-2026-42052, https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847, https://ubuntu.com/security/notices/USN-8747-1

    Affected packages

    Package

    Name: beets

    Purl: pkg:deb/ubuntu/beets?arch=source&distro=esm-apps-legacy%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.3.8+dfsg-2ubuntu0.1~esm1

    Affected versions

    1.3.8+dfsg-2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2026-42052 | CVE-DB