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    CVE-2025-59788

    Cross-site scripting (XSS) vulnerability in a reachable files_pdfviewer example directory in Nextcloud with versions before 22.2.10.33, 23.0.12.29, 24.0.12.28, 25.0.13.23, 26.0.13.20, 27.1.11.20, 28.0.14.11, 29.0.16.8, 30.0.17, 31.0.10, and 32.0.1 allows attackers to execute arbitrary JavaScript in the context of a user's browser via a crafted PDF file to viewer.html. This issue is related to CVE-2024-4367, but the root cause of this Nextcloud issue is that the product exposes executable example code on a same-origin basis.

    Published:Dec 4, 2025
    Last Modified:Mar 25, 2026
    EPS:Dec 4, 2025
    EPSS Score:0.00024
    CVSS Score:6.4

    Affected Products

    Vendor
    Nextcloud
    Product
    Nextcloud
    Vendor
    Nextcloud
    Product
    Nextcloud Server

    Exploits

    https://www.redteam-pentesting.de/en/advisories/rt-sa-2025-003/

    Related CVEs

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    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