The Contextual Related Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'other_attributes' parameter in versions up to, and including, 4.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Missing Authorization vulnerability in Ajay Contextual Related Posts contextual-related-posts allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Contextual Related Posts: from n/a through < 4.2.2.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Ajay Contextual Related Posts contextual-related-posts allows DOM-Based XSS.This issue affects Contextual Related Posts: from n/a through <= 4.0.2.
The Contextual Related Posts WordPress plugin before 3.3.1 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks