CVE-2026-96840

The Post Grid Gutenberg Blocks – PostX plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) in all versions up to and including 5.1.0 . The root cause is insufficient input sanitization and output escaping in the display_name User Field. Specifically, while WordPress core encod...

CVE-2026-96840 Post Grid Gutenberg Blocks <= 5.1.0 - Unauthenticated Stored Cross-Site Scripting via display_name User Field

The Post Grid Gutenberg Blocks – PostX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via displayname User Field in all versions up to, and including, 5.1.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to injec...