CVE-2023-39952

    Dashboard / Vulnerabilities / CVE-2023-39952

    CVE-2023-39952

    Published: 10 Aug 2023Last Modified: 12 Aug 2026

    Summary: Advanced permissions not respected when copying entire group folders

    Details: Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1, a user can access files inside a subfolder of a groupfolder accessible to them, even if advanced permissions would block access to the subfolder. Nextcloud Server versions 25.0.8, 26.0.3, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1 contain a patch for this issue. No known workarounds are available.

    References: https://hackerone.com/reports/1808079, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39952.json, https://github.com/nextcloud/security-advisories/security/advisories/GHSA-cq8w-v4fh-4rjq, https://nvd.nist.gov/vuln/detail/CVE-2023-39952, https://github.com/nextcloud/groupfolders/issues/1906, https://github.com/nextcloud/server/pull/38890

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 20ea9a25353129b56d46951fe7d23939665ab2b2
    Fixed -82f744bb016b059a55d1c6c476a665029e55cedc

    Affected versions

    27.0.0

    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-2023-39952 | CVE-DB