The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

The EasyAzon – Amazon Associates Affiliate Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘easyazon-cloaking-locale’ parameter 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 inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

php-mod/curl (a wrapper of the PHP cURL extension) before 2.3.2 allows XSS via the post_file_path_upload.php key parameter and the POST data to post_multidimensional.php.

Reflected Cross-Site Scripting (XSS) vulnerability in 2kb Amazon Affiliates Store plugin <=2.1.5 on WordPress.

Multiple cross-site scripting (XSS) vulnerabilities in the 2kb Amazon Affiliates Store plugin before 2.1.1 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) page parameter or (2) kbAction parameter in the kbAmz page to wp-admin/admin.php.