The Attributes for Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘attributesForBlocks’ parameter in all versions up to, and including, 1.0.6 due to insufficient input sanitization and output escaping. 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 Blockspare: Gutenberg Blocks & Patterns for Blogs, Magazines, Business Sites – Post Grids, Sliders, Carousels, Counters, Page Builder & Starter Site Imports, No Coding Needed plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several parameters in the ‘blockspare_render_social_sharing_block’ function in all versions up to, and including, 3.2.4 due to insufficient input sanitization and output escaping. 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 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 1.5.

The Page Builder Gutenberg Blocks WordPress plugin before 3.1.13 does not escape the content of post embed via one of its block, which could allow users with the capability to publish posts (editor and admin by default) to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WP Travel WP Travel Gutenberg Blocks allows Stored XSS.This issue affects WP Travel Gutenberg Blocks: from n/a through 3.5.1.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in AREOI All Bootstrap Blocks allows Stored XSS.This issue affects All Bootstrap Blocks: from n/a through 1.3.19.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in CyberChimps Responsive Blocks – WordPress Gutenberg Blocks allows Stored XSS.This issue affects Responsive Blocks – WordPress Gutenberg Blocks: from n/a through 1.8.8.

The JetBlocks for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple placeholder parameters in all versions up to, and including, 1.3.12 due to insufficient input sanitization and output escaping. 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 Gutenberg Blocks, Page Builder – ComboBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's Accordion block in all versions up to, and including, 2.2.87 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 Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Blockspare allows Stored XSS.This issue affects Blockspare: from n/a through 3.2.0.