Webhooks < 3.3.9 - Unauthenticated Arbitrary File Upload

Description

The WP Webhooks – Automate repetitive tasks by creating powerful automation workflows directly within WordPress plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 3.3.8. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.