WordPress Yoast SEO plugin <= 27.1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'jsonText' Block Attribute vulnerability

Authenticated Contributor+ Stored Cross-Site Scripting via 'jsonText' Block Attribute vulnerability discovered by Osvaldo Noe Gonzalez Del Rio Os - krei.dev | ogbuilders.io in WordPress Plugin Yoast SEO versions = 27.1.1...

CVE-2026-3427: Improper Neutralization of Input During Web Page Generation

The Yoast SEO – Advanced SEO with real-time guidance and built-in AI plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the the jsonText block attribute in all versions up to, and including, 27.1.1 due to insufficient input sanitization and output escaping. This makes it possib...