JVM rich text icons < 1.2.4 - Subscriber+ Arbitrary File Upload

Description

The JVM Gutenberg Rich Text Icons plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'ajax_upload_icon' function in all versions up to and including 1.2.3. This makes it possible for authenticated attackers, with subscriber access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.