SQL injection vulnerability in the WPML plugin before 3.1.9 for WordPress allows remote attackers to execute arbitrary SQL commands via the lang parameter in the HTTP Referer header in a wp-link-ajax action to comments/feed.

Cross-site scripting (XSS) vulnerability in the WPML plugin before 3.1.9 for WordPress allows remote attackers to inject arbitrary web script or HTML via the target parameter in a reminder_popup action to the default URI.

The "menu sync" function in the WPML plugin before 3.1.9 for WordPress allows remote attackers to delete arbitrary posts, pages, and menus via a crafted request to sitepress-multilingual-cms/menu/menus-sync.php.

The WPML plugin before 3.1.9 for WordPress does not properly handle multiple actions in a request, which allows remote attackers to bypass nonce checks and perform arbitrary actions via a request containing an action POST parameter, an action GET parameter, and a valid nonce for the action GET parameter.

process_forms in the WPML (aka sitepress-multilingual-cms) plugin through 3.6.3 for WordPress has XSS via any locale_file_name_ parameter (such as locale_file_name_en) in an authenticated theme-localization.php request to wp-admin/admin.php.

Broken Access Control vulnerability in WPML Multilingual CMS premium plugin <= 4.5.10 on WordPress allows users with a subscriber or higher user role to change plugin settings (selected language for legacy widgets, the default behavior for media content).

Broken Access Control vulnerability in WPML Multilingual CMS premium plugin <= 4.5.10 on WordPress allows users with subscriber or higher user roles to change the status of the translation jobs.

Cross-Site Request Forgery (CSRF) vulnerability in WPML Multilingual CMS premium plugin <= 4.5.13 on WordPress.

Cross-Site Request Forgery (CSRF) vulnerability in WPML Multilingual CMS premium plugin <= 4.5.13 on WordPress.

The WPML plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.6.12 via Twig Server-Side Template Injection. This is due to missing input validation and sanitization on the render function. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server.

The WPML plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's wpml_language_switcher shortcode in versions 3.6.0 - 4.7.3 due to insufficient input sanitization and output escaping on user supplied attributes. 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.