The SKT Blocks – Gutenberg based Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's skt-blocks/post-carousel block in all versions up to, and including, 1.7 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 SKT Page Builder plugin for WordPress is vulnerable to arbitrary file uploads due to a missing capability check on the 'addLibraryByArchive' function in all versions up to, and including, 4.6. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload arbitrary files that make remote code execution possible.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in SKT Themes SKT Blocks – Gutenberg based Page Builder allows Stored XSS.This issue affects SKT Blocks – Gutenberg based Page Builder: from n/a through 1.6.

The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

The SKT Page Builder plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'saveSktbuilderPageData' function in all versions up to, and including, 4.1. This makes it possible for authenticated attackers, with subscriber access and above, to inject arbitrary content into pages.