Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Meks Meks Easy Ads Widget allows Stored XSS.This issue affects Meks Easy Ads Widget: from n/a through 2.0.8.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Meks Meks Smart Author Widget allows Stored XSS.This issue affects Meks Smart Author Widget: from n/a through 1.1.4.

The Meks Video Importer plugin for WordPress is vulnerable to unauthorized API key modification due to a missing capability check on the ajax_save_settings function in all versions up to, and including, 1.0.11. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the plugin's API keys

The Meks Smart Social Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Meks Smart Social Widget in all versions up to, and including, 1.6.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Cross-Site Request Forgery (CSRF) vulnerability in Meks Video Importer, Meks Time Ago, Meks ThemeForest Smart Widget, Meks Smart Author Widget, Meks Audio Player, Meks Easy Maps, Meks Easy Photo Feed Widget, Meks Simple Flickr Widget, Meks Easy Ads Widget, Meks Smart Social Widget plugins leading to dismiss or the popup.

The Meks Flexible Shortcodes WordPress plugin before 1.3.5 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

The Meks Easy Social Share WordPress plugin before 1.2.8 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

The Meks Easy Photo Feed Widget WordPress plugin before 1.2.4 does not have capability and CSRF checks in the meks_save_business_selected_account AJAX action, available to any authenticated user, and does not escape some of the settings. As a result, any authenticated user, such as subscriber could update the plugin's settings and put Cross-Site Scripting payloads in them