Post and Page Builder by BoldGrid < 1.27.7 - Path Traversal to Authenticated (Contributor+) Arbitrary File Read via template_via_url Function

Description

The Post and Page Builder by BoldGrid – Visual Drag and Drop Editor plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 1.27.6 via the template_via_url() function. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information.