Magazine Blocks < 1.3.7 - Authenticated (Author+) Stored Cross-Site Scripting

Description The Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder with Posts Blocks, Post Grid plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the post title markup parameter in all versions up to, and including, 1.3.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.