CVE-2026-5743 Mixed Media Gallery Blocks <= 3.3.3.1 - Authenticated (Author+) Stored Cross-Site Scripting via sliderMaxHeight Block Attribute

The SimpLy Gallery Block & Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via block attributes in all versions up to, and including, 3.3.3.2. This is due to insufficient input sanitization and output escaping on the sliderMaxHeight block attribute in the...

CVE-2026-5743

The CVE concerns the SimpLy Gallery Block & Lightbox WordPress plugin. A stored XSS vulnerability exists through the sliderMaxHeight block attribute in all versions up to and including 3.3.3.2, caused by insufficient input sanitization and output escaping in pgc_sgb_render_callback(). The root ca...