Essential Blocks <= 5.7.2 - Missing Authorization To Authenticated (Author+) Information Disclosure

The Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns plugin for WordPress is vulnerable to unauthorized access of data due to a missing or incorrect capability checks on the get_instagram_access_token_callback, google_map_api_key_save_callback and get_siteinfo functions in all versions up to, and including, 5.7.2. This makes it possible for authenticated attackers, with Author-level access and above, to view API keys configured for the external services.