CVE-2023-25159

    Dashboard / Vulnerabilities / CVE-2023-25159

    CVE-2023-25159

    Published: 13 Feb 2023Last Modified: 28 Oct 2026

    Summary: Nextcloud Server previews are accessible without a watermark

    Details: Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform, and Nextcloud Office is a document collaboration app for the same platform. Nextcloud Server 24.0.x prior to 24.0.8 and 25.0.x prior to 25.0.1, Nextcloud Enterprise Server 24.0.x prior to 24.0.8 and 25.0.x prior to 25.0.1, and Nextcloud Office (Richdocuments) App 6.x prior to 6.3.1 and 7.x prior to 7.0.1 have previews accessible without a watermark. The download should be hidden and the watermark should get applied. This issue is fixed in Nextcloud Server 25.0.1 and 24.0.8, Nextcloud Enterprise Server 25.0.1 and 24.0.8, and Nextcloud Office (Richdocuments) App 7.0.1 (for 25) and 6.3.1 (for 24). No known workarounds are available.

    References: https://hackerone.com/reports/1745755, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/25xxx/CVE-2023-25159.json, https://github.com/nextcloud/security-advisories/security/advisories/GHSA-92g2-h5jv-jjmg, https://nvd.nist.gov/vuln/detail/CVE-2023-25159, https://github.com/nextcloud/richdocuments/pull/2579, https://github.com/nextcloud/server/pull/34799

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- ef21d975a612a34b7f82567de8b638388f71b337
    Fixed -e633409c222c38d72c2e59923d0aa2d78fec7002

    Affected versions

    24.0.2-NA

    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