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    CVE-2023-26482

    Nextcloud server is an open source home cloud implementation. In affected versions a missing scope validation allowed users to create workflows which are designed to be only available for administrators. Some workflows are designed to be RCE by invoking defined scripts, in order to generate PDFs, invoking webhooks or running scripts on the server. Due to this combination depending on the available apps the issue can result in a RCE at the end. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. Users unable to upgrade should disable app `workflow_scripts` and `workflow_pdf_converter` as a mitigation.

    Published:Mar 30, 2023
    Last Modified:Feb 11, 2025
    EPS:Mar 30, 2023
    EPSS Score:0.65511
    CVSS Score:9.1

    Affected Products

    Vendor
    Nextcloud
    Product
    Nextcloud Server

    Exploits

    https://github.com/ISabbiI/PoC---CVE-2023-26482-RCE-LAB-Nextcloud

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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