InPost Gallery <= 2.1.4.2 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via inpost_gallery_get_shortcode_template

The The InPost Gallery plugin for WordPress is vulnerable to arbitrary shortcode execution via the inpost_gallery_get_shortcode_template AJAX action in all versions up to, and including, 2.1.4.2. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes.

InPost Gallery < 2.1.4.1 - Unauthenticated LFI to RCE

The InPost Gallery WordPress plugin before 2.1.4.1 insecurely uses PHP's extract() function when rendering HTML views, allowing attackers to force the inclusion of malicious files & URLs, which may enable them to run code on servers.

The InPost Gallery WordPress plugin, in versions < 2.2.2, is affected by a reflected cross-site scripting vulnerability in the 'imgurl' parameter to the add_inpost_gallery_slide_item action, which can only be triggered by an authenticated user.