The User Role Editor plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.64.3. This is due to missing or incorrect nonce validation on the update_roles() function. This makes it possible for unauthenticated attackers to add or remove roles for arbitrary users, including escalating their privileges to administrator, via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Multiple cross-site scripting (XSS) vulnerabilities in the Thank You Counter Button plugin 1.8.7 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) thanks_caption, (2) thanks_caption_style, or (3) thanks_style parameter to wp-admin/options.php.