UBUNTU-CVE-2026-121627

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    UBUNTU-CVE-2026-121627

    Published: 3 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-121627

    Summary:

    Details: buku 5.0 through 5.1.1 contains a stored cross-site scripting vulnerability in the bukuserver bookmark list that allows attackers to execute script via an unescaped bookmark URL in BookmarkModelView._list_entry(). Attackers can submit a URL containing a double quote and event handler through the unauthenticated /api/bookmarks endpoint to issue same-origin API requests with viewers' credentials.

    References: https://ubuntu.com/security/CVE-2026-121627, https://www.cve.org/CVERecord?id=CVE-2026-121627, https://github.com/jarun/buku, https://github.com/jarun/buku/blob/v5.1.1/bukuserver/views.py#L133, https://github.com/jarun/buku/issues/911, https://www.vulncheck.com/advisories/buku-5.0-through-5.1.1-stored-xss-via-bukuserver-bookmark-list-url

    Affected packages

    Package

    Name: buku

    Purl: pkg:deb/ubuntu/buku?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.2.0-1

    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-2026-121627 | CVE-DB