Groundhogg < 4.2.2 - Authenticated (Sales Rep+) Arbitrary File Upload

Description

The WordPress CRM, Email & Marketing Automation for WordPress | Award Winner — Groundhogg plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 4.2.1. This makes it possible for authenticated attackers, with sales rep-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.