jQuery before 3.4.0, as used in Drupal, Backdrop CMS, and other products, mishandles jQuery.extend(true, {}, ...) because of Object.prototype pollution. If an unsanitized source object contained an enumerable __proto__ property, it could extend the native Object.prototype.

jQuery before 3.0.0 is vulnerable to Cross-site Scripting (XSS) attacks when a cross-domain Ajax request is performed without the dataType option, causing text/javascript responses to be executed.

The password reset feature in Courion Access Risk Management Suite Version 8 Update 9 allows remote authenticated users to bypass intended Internet Explorer usage restrictions and execute arbitrary commands by using keyboard shortcuts to navigate the file system and open a command prompt.