CVE-2026-3604 WP SEO Structured Data Schema <= 2.8.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via '_kcseo_ative_tab' Parameter

The WP SEO Structured Data Schema plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the kcseoativetab parameter in all versions up to, and including, 2.8.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with...

CVE-2026-3604

The CVE-2026-3604 entry concerns the WordPress plugin WP SEO Structured Data Schema (versions up to and including 2.8.1). The vulnerability is a Stored Cross‑Site Scripting (XSS) via the _kcseo_ative_tab parameter, caused by insufficient input sanitization and output escaping. Attackers with Cont...