CVE-2026-75599

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    CVE-2026-75599

    Published: 5 Nov 2026Last Modified: 7 Nov 2026

    Summary: HomeBox: Stored XSS via `javascript:` URI in Custom Entity Fields

    Details: HomeBox is a home inventory and organization system. Prior to 0.27.0, the maybeUrl() utility accepts markdown-style links in entity custom-field values without restricting the URL scheme, so an authenticated user can store a javascript: URI that is rendered as a clickable anchor on an item page. When another authenticated user clicks the link, attacker-controlled JavaScript executes in the victim's HomeBox origin, enabling session theft, account takeover, or data exfiltration. This issue is fixed in version 0.27.0.

    References: https://github.com/sysadminsmedia/homebox/releases/tag/v0.27.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75599.json, https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-h4x5-6587-jpwp, https://nvd.nist.gov/vuln/detail/CVE-2026-75599, https://github.com/sysadminsmedia/homebox/commit/d76b1c9b94e91cd74e56ef8a129325d70835471f

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -bae3fb4e9b84672e4e64da15e57a14217aea7c13

    Affected versions

    v0.26.2
    v0.26.1
    v0.26.0
    v0.26.0-rc.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
    CVE-2026-75599 | CVE-DB