Instant Image Generator < 1.5.3 - Unauthenticated Arbitrary File Upload

Description

The Instant Image Generator (One Click Image Uploads from Pixabay, Pexels and OpenAI) plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in a function in all versions up to, and including, 1.5.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.