The MarketKing — Ultimate WooCommerce Multivendor Marketplace Solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via plugin's settings in all versions up to, and including, 1.9.80 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Shop Manager-level permissions and above, 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 unfilteredhtml has been disabled.

The MarketKing — Ultimate WooCommerce Multivendor Marketplace Solution plugin for WordPress is vulnerable to unauthorized access due to missing capability checks on several functions like 'marketkingdeleteteammember', 'marketkingrejectuser', 'marketkingsaveprofilesettings', and many more in all versions up to, and including, 2.0.00. This makes it possible for unauthenticated attackers to delete users, update settings, approve users, and more.