The Jetpack – WP Security, Backup, Speed, & Growth plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's wpvideo shortcode in all versions up to, and including, 13.3.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The 'wpajaxboostproxyig' action allows administrators to make GET requests to arbitrary URLs.

The Better Follow Button for Jetpack WordPress plugin through 8.0 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 unfilteredhtml capability is disallowed (for example in multisite setup).

The Jetpack WordPress plugin does not have proper authorisation in one of its REST endpoint, allowing any authenticated users, such as subscriber to read arbitrary feedbacks data sent via the Jetpack Contact Form

The Jetpack WordPress plugin before 14.1 does not properly checks the postmessage origin in its 13.x versions, allowing it to be bypassed and leading to DOM-XSS. The issue only affects websites hosted on WordPress.com.