The Jetpack WordPress plugin before 13.8 does not ensure that the post created by the Contact Form is only accessible to authorised users, which could allow unauthenticated users to run arbitrary shortcodes and block.
The Jetpack WordPress plugin before 13.8, Jetpack Boost WordPress plugin before 3.4.8 use regexes in the Site Accelerator features when switching image URLs to their CDN counterpart. Unfortunately, some of them may match patterns it shouldn’t, ultimately making it possible for contributor and above users to perform Stored XSS attacks
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.
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.
Improper Restriction of Rendered UI Layers or Frames vulnerability in Automattic Jetpack allows Clickjacking.This issue affects Jetpack: from n/a before 12.7.
The Jetpack WordPress plugin before 12.1.1 does not validate uploaded files, allowing users with author roles or above to manipulate existing files on the site, deleting arbitrary files, and in rare cases achieve Remote Code Execution via phar deserialization.
The Jetpack Carousel module of the JetPack WordPress plugin before 9.8 allows users to create a "carousel" type image gallery and allows users to comment on the images. A security vulnerability was found within the Jetpack Carousel module by nguyenhg_vcs that allowed the comments of non-published page/posts to be leaked.