The sanitize_widget_instance function in wp-includes/class-wp-customize-widgets.php in WordPress before 4.2.4 does not use a constant-time comparison for widgets, which allows remote attackers to conduct a timing side-channel attack by measuring the delay before inequality is calculated.

Cross-site scripting (XSS) vulnerability in the Ephox (formerly Moxiecode) plupload.flash.swf shim 2.1.2 in Plupload, as used in WordPress 3.9.x, 4.0.x, and 4.1.x before 4.1.2 and other products, allows remote attackers to execute same-origin JavaScript functions via the target parameter, as demonstrated by executing a certain click function, related to _init.as and _fireEvent.as.

Multiple cross-site scripting (XSS) vulnerabilities in WordPress before 4.1.2, when MySQL is used without strict mode, allow remote attackers to inject arbitrary web script or HTML via a (1) four-byte UTF-8 character or (2) invalid character that reaches the database layer, as demonstrated by a crafted character in a comment.

WordPress before 4.2.3 does not properly verify the edit_posts capability, which allows remote authenticated users to bypass intended access restrictions and create drafts by leveraging the Subscriber role, as demonstrated by a post-quickdraft-save action to wp-admin/post.php.

Cross-site scripting (XSS) vulnerability in wp-includes/wp-db.php in WordPress before 4.2.1 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type.

Cross-site scripting (XSS) vulnerability in WordPress before 4.2.3 allows remote authenticated users to inject arbitrary web script or HTML by leveraging the Author or Contributor role to place a crafted shortcode inside an HTML element, related to wp-includes/kses.php and wp-includes/shortcodes.php.

SQL injection vulnerability in feedwordpresssyndicationpage.class.php in the FeedWordPress plugin before 2015.0514 for WordPress allows remote authenticated users to execute arbitrary SQL commands via the link_ids[] parameter in an Update action in the syndication.php page to wp-admin/admin.php.

Multiple cross-site request forgery (CSRF) vulnerabilities in the Mikiurl Wordpress Eklentisi plugin 2.0 and earlier for WordPress allow remote attackers to hijack the authentication of administrators for requests that conduct cross-site scripting (XSS) attacks via the (1) twitter_kullanici or (2) twitter_sifre parameter in a kaydet action in the mikiurl.php page to wp-admin/options-general.php.

Cross-site scripting (XSS) vulnerability in the wptexturize function in WordPress before 3.7.5, 3.8.x before 3.8.5, and 3.9.x before 3.9.3 allows remote attackers to inject arbitrary web script or HTML via crafted use of shortcode brackets in a text field, as demonstrated by a comment or a post.

Cross-site scripting (XSS) vulnerability in the media-playlists feature in WordPress before 3.9.x before 3.9.3 and 4.x before 4.0.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.