CVE-2026-5340 Fancy Image Show <= 9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

The Fancy Image Show plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's fancy-img-show shortcode in all versions up to, and including, 9.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticat...