WordPress — свободно распространяемая система управления содержимым сайта с открытым исходным кодом.

wp-includes/ms-functions.php in the Multisite WordPress API in WordPress before 4.7.1 does not properly choose random numbers for keys, which makes it easier for remote attackers to bypass intended access restrictions via a crafted (1) site signup or (2) user signup.

wp-admin/user-new.php in WordPress before 4.9.1 sets the newbloguser key to a string that can be directly derived from the user ID, which allows remote attackers to bypass intended access restrictions by entering this string.

WordPress 4.8.2 stores cleartext wp_signups.activation_key values (but stores the analogous wp_users.user_activation_key values as hashes), which might make it easier for remote attackers to hijack unactivated user accounts by leveraging database read access (such as access gained through an unspecified SQL injection vulnerability).

The register_routes function in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php in the REST API in WordPress 4.7.x before 4.7.2 does not require an integer identifier, which allows remote attackers to modify arbitrary pages via a request for wp-json/wp/v2/posts followed by a numeric value and a non-numeric value, as demonstrated by the wp-json/wp/v2/posts/123?id=123helloworld URI.

Multiple cross-site scripting (XSS) vulnerabilities in userperspan.php in the Count Per Day module before 3.2 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) page, (2) datemin, or (3) datemax parameter.

Cross-site scripting (XSS) vulnerability in map/map.php in the Count Per Day module before 3.1.1 for WordPress allows remote attackers to inject arbitrary web script or HTML via the map parameter.

Absolute path traversal vulnerability in download.php in the Count Per Day module before 3.1.1 for WordPress allows remote attackers to read arbitrary files via the f parameter.

In WordPress before 4.9.9 and 5.x before 5.0.1, authors could modify metadata to bypass intended restrictions on deleting files.

SQL injection vulnerability in wp-includes/class-wp-query.php in WP_Query in WordPress before 4.7.2 allows remote attackers to execute arbitrary SQL commands by leveraging the presence of an affected plugin or theme that mishandles a crafted post type name.

WordPress through 5.0.3 allows Path Traversal in wp_crop_image(). An attacker (who has privileges to crop an image) can write the output image to an arbitrary directory via a filename containing two image extensions and ../ sequences, such as a filename ending with the .jpg?/../../file.jpg substring.