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    CVE-2026-88824

    The Master Blocks WordPress plugin before 1.5.0 does not have authorisation on one of its REST routes, allowing unauthenticated users to update its settings, including a value that is output unescaped in the admin area, leading to Stored XSS that executes in the session of any administrator visiting a wp-admin page.

    Published:Sep 19, 2026
    Last Modified:Sep 28, 2026
    EPS:Sep 19, 2026
    EPSS Score:0.00505
    CVSS Score:8.8

    Affected Products

    Vendor
    Wordpress-extensions
    Product
    Master Blocks

    Exploits

    No exploit reference

    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