The Borderless – Widgets, Elements, Templates and Toolkit for Elementor & Gutenberg plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.5.9 via the 'write_config' function. This is due to a lack of sanitization on an imported JSON file. This makes it possible for authenticated attackers, with Administrator-level access and above, to execute code on the server.
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.