diff --git a/wp-admin/includes/ajax-actions.php b/wp-admin/includes/ajax-actions.php index e8c7320e8d..4e7b1e72fb 100644 --- a/wp-admin/includes/ajax-actions.php +++ b/wp-admin/includes/ajax-actions.php @@ -3140,13 +3140,29 @@ function wp_ajax_parse_media_shortcode() { $shortcode = wp_unslash( $_POST['shortcode'] ); + // Only process previews for media related shortcodes: + $found_shortcodes = get_shortcode_tags_in_content( $shortcode ); + $media_shortcodes = array( + 'audio', + 'embed', + 'playlist', + 'video', + 'gallery', + ); + + $other_shortcodes = array_diff( $found_shortcodes, $media_shortcodes ); + + if ( ! empty( $other_shortcodes ) ) { + wp_send_json_error(); + } + if ( ! empty( $_POST['post_ID'] ) ) { $post = get_post( (int) $_POST['post_ID'] ); } // the embed shortcode requires a post if ( ! $post || ! current_user_can( 'edit_post', $post->ID ) ) { - if ( 'embed' === $shortcode ) { + if ( in_array( 'embed', $found_shortcodes, true ) ) { wp_send_json_error(); } } else { diff --git a/wp-admin/includes/class-wp-comments-list-table.php b/wp-admin/includes/class-wp-comments-list-table.php index f87ce81e2b..8ab637a07a 100644 --- a/wp-admin/includes/class-wp-comments-list-table.php +++ b/wp-admin/includes/class-wp-comments-list-table.php @@ -500,6 +500,19 @@ class WP_Comments_List_Table extends WP_List_Table { } $this->user_can = current_user_can( 'edit_comment', $comment->comment_ID ); + $edit_post_cap = $post ? 'edit_post' : 'edit_posts'; + if ( + current_user_can( $edit_post_cap, $comment->comment_post_ID ) || + ( + empty( $post->post_password ) && + current_user_can( 'read_post', $comment->comment_post_ID ) + ) + ) { + // The user has access to the post + } else { + return false; + } + echo ""; $this->single_row_columns( $comment ); echo "\n"; diff --git a/wp-admin/includes/class-wp-list-table.php b/wp-admin/includes/class-wp-list-table.php index d47b530202..85eac85fbe 100644 --- a/wp-admin/includes/class-wp-list-table.php +++ b/wp-admin/includes/class-wp-list-table.php @@ -622,7 +622,20 @@ class WP_List_Table { $approved_phrase = sprintf( _n( '%s approved comment', '%s approved comments', $approved_comments ), $approved_comments_number ); $pending_phrase = sprintf( _n( '%s pending comment', '%s pending comments', $pending_comments ), $pending_comments_number ); - // No comments at all. + $post_object = get_post( $post_id ); + $edit_post_cap = $post_object ? 'edit_post' : 'edit_posts'; + if ( + current_user_can( $edit_post_cap, $post_id ) || + ( + empty( $post_object->post_password ) && + current_user_can( 'read_post', $post_id ) + ) + ) { + // The user has access to the post and thus can see comments + } else { + return false; + } + if ( ! $approved_comments && ! $pending_comments ) { printf( '%s', __( 'No comments' ) diff --git a/wp-admin/includes/dashboard.php b/wp-admin/includes/dashboard.php index fa1d2ffad4..d9fd6994e3 100644 --- a/wp-admin/includes/dashboard.php +++ b/wp-admin/includes/dashboard.php @@ -919,8 +919,18 @@ function wp_dashboard_recent_comments( $total_items = 5 ) { echo '

' . __( 'Recent Comments' ) . '

'; echo ''; if ( current_user_can( 'edit_posts' ) ) { diff --git a/wp-includes/Requests/Hooks.php b/wp-includes/Requests/Hooks.php index 2e61c73406..c94ee9b5b9 100644 --- a/wp-includes/Requests/Hooks.php +++ b/wp-includes/Requests/Hooks.php @@ -65,4 +65,8 @@ class Requests_Hooks implements Requests_Hooker { return true; } -} \ No newline at end of file + + public function __wakeup() { + throw new \LogicException( __CLASS__ . ' should never be unserialized' ); + } +} diff --git a/wp-includes/Requests/IRI.php b/wp-includes/Requests/IRI.php index 8dc2fa2841..e262893b3a 100644 --- a/wp-includes/Requests/IRI.php +++ b/wp-includes/Requests/IRI.php @@ -703,6 +703,20 @@ class Requests_IRI { return true; } + public function __wakeup() { + $class_props = get_class_vars( __CLASS__ ); + $string_props = array( 'scheme', 'iuserinfo', 'ihost', 'port', 'ipath', 'iquery', 'ifragment' ); + $array_props = array( 'normalization' ); + foreach ( $class_props as $prop => $default_value ) { + if ( in_array( $prop, $string_props, true ) && ! is_string( $this->$prop ) ) { + throw new UnexpectedValueException(); + } elseif ( in_array( $prop, $array_props, true ) && ! is_array( $this->$prop ) ) { + throw new UnexpectedValueException(); + } + $this->$prop = null; + } + } + /** * Set the entire IRI. Returns true on success, false on failure (if there * are any invalid characters). diff --git a/wp-includes/Requests/Session.php b/wp-includes/Requests/Session.php index af14bbe416..6c3e0974be 100644 --- a/wp-includes/Requests/Session.php +++ b/wp-includes/Requests/Session.php @@ -227,6 +227,10 @@ class Requests_Session { return Requests::request_multiple($requests, $options); } + public function __wakeup() { + throw new \LogicException( __CLASS__ . ' should never be unserialized' ); + } + /** * Merge a request's data with the default data * diff --git a/wp-includes/class-wp-theme.php b/wp-includes/class-wp-theme.php index b53bdcc54c..f5edffc037 100644 --- a/wp-includes/class-wp-theme.php +++ b/wp-includes/class-wp-theme.php @@ -534,6 +534,28 @@ final class WP_Theme implements ArrayAccess { return isset( $this->parent ) ? $this->parent : false; } + /** + * Perform reinitialization tasks. + * + * Prevents a callback from being injected during unserialization of an object. + * + * @return void + */ + public function __wakeup() { + if ( $this->parent && ! $this->parent instanceof self ) { + throw new UnexpectedValueException(); + } + if ( $this->headers && ! is_array( $this->headers ) ) { + throw new UnexpectedValueException(); + } + foreach ( $this->headers as $value ) { + if ( ! is_string( $value ) ) { + throw new UnexpectedValueException(); + } + } + $this->headers_sanitized = array(); + } + /** * Adds theme data to cache. * @@ -1486,4 +1508,16 @@ final class WP_Theme implements ArrayAccess { // Don't mark up; Do translate. return strnatcasecmp( $a->display( 'Name', false, true ), $b->display( 'Name', false, true ) ); } + + private static function _check_headers_property_has_correct_type( $headers ) { + if ( ! is_array( $headers ) ) { + return false; + } + foreach ( $headers as $key => $value ) { + if ( ! is_string( $key ) || ! is_string( $value ) ) { + return false; + } + } + return true; + } } diff --git a/wp-includes/media.php b/wp-includes/media.php index fc10087630..9f37e1a855 100644 --- a/wp-includes/media.php +++ b/wp-includes/media.php @@ -1687,11 +1687,24 @@ function gallery_shortcode( $attr ) { $attachments[$val->ID] = $_attachments[$key]; } } elseif ( ! empty( $atts['exclude'] ) ) { + $post_parent_id = $id; $attachments = get_children( array( 'post_parent' => $id, 'exclude' => $atts['exclude'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) ); } else { + $post_parent_id = $id; $attachments = get_children( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) ); } + if ( ! empty( $post_parent_id ) ) { + $post_parent = get_post( $post_parent_id ); + + // terminate the shortcode execution if user cannot read the post or password-protected + if ( + ( ! is_post_publicly_viewable( $post_parent->ID ) && ! current_user_can( 'read_post', $post_parent->ID ) ) + || post_password_required( $post_parent ) ) { + return ''; + } + } + if ( empty( $attachments ) ) { return ''; } @@ -1991,6 +2004,15 @@ function wp_playlist_shortcode( $attr ) { $attachments = get_children( $args ); } + if ( ! empty( $args['post_parent'] ) ) { + $post_parent = get_post( $id ); + + // terminate the shortcode execution if user cannot read the post or password-protected + if ( ! current_user_can( 'read_post', $post_parent->ID ) || post_password_required( $post_parent ) ) { + return ''; + } + } + if ( empty( $attachments ) ) { return ''; } diff --git a/wp-includes/rest-api.php b/wp-includes/rest-api.php index c3dfe4af8c..176e06a326 100644 --- a/wp-includes/rest-api.php +++ b/wp-includes/rest-api.php @@ -783,6 +783,7 @@ function rest_cookie_check_errors( $result ) { $result = wp_verify_nonce( $nonce, 'wp_rest' ); if ( ! $result ) { + add_filter( 'rest_send_nocache_headers', '__return_true', 20 ); return new WP_Error( 'rest_cookie_invalid_nonce', __( 'Cookie nonce is invalid' ), array( 'status' => 403 ) ); } diff --git a/wp-includes/rest-api/class-wp-rest-server.php b/wp-includes/rest-api/class-wp-rest-server.php index 56322f90c4..1f7952d50c 100644 --- a/wp-includes/rest-api/class-wp-rest-server.php +++ b/wp-includes/rest-api/class-wp-rest-server.php @@ -234,24 +234,6 @@ class WP_REST_Server { $this->send_header( 'Access-Control-Expose-Headers', 'X-WP-Total, X-WP-TotalPages' ); $this->send_header( 'Access-Control-Allow-Headers', 'Authorization, Content-Type' ); - /** - * Send nocache headers on authenticated requests. - * - * @since 4.4.0 - * - * @param bool $rest_send_nocache_headers Whether to send no-cache headers. - */ - $send_no_cache_headers = apply_filters( 'rest_send_nocache_headers', is_user_logged_in() ); - if ( $send_no_cache_headers ) { - foreach ( wp_get_nocache_headers() as $header => $header_value ) { - if ( empty( $header_value ) ) { - $this->remove_header( $header ); - } else { - $this->send_header( $header, $header_value ); - } - } - } - /** * Filters whether the REST API is enabled. * @@ -309,10 +291,12 @@ class WP_REST_Server { * $_GET['_method']. If that is not set, we check for the HTTP_X_HTTP_METHOD_OVERRIDE * header. */ + $method_overridden = false; if ( isset( $_GET['_method'] ) ) { $request->set_method( $_GET['_method'] ); } elseif ( isset( $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'] ) ) { $request->set_method( $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'] ); + $method_overridden = true; } $result = $this->check_authentication(); @@ -371,6 +355,28 @@ class WP_REST_Server { */ $served = apply_filters( 'rest_pre_serve_request', false, $result, $request, $this ); + /** + * Filters whether to send nocache headers on a REST API request. + * + * @since 4.4.0 + * @since 6.x.x Moved the block to catch the filter added on rest_cookie_check_errors() from rest-api.php + * + * @param bool $rest_send_nocache_headers Whether to send no-cache headers. + */ + $send_no_cache_headers = apply_filters( 'rest_send_nocache_headers', is_user_logged_in() ); + + // send no cache headers if the $send_no_cache_headers is true + // OR if the HTTP_X_HTTP_METHOD_OVERRIDE is used but resulted a 4xx response code. + if ( $send_no_cache_headers || ( true === $method_overridden && strpos( $code, '4' ) === 0 ) ) { + foreach ( wp_get_nocache_headers() as $header => $header_value ) { + if ( empty( $header_value ) ) { + $this->remove_header( $header ); + } else { + $this->send_header( $header, $header_value ); + } + } + } + if ( ! $served ) { if ( 'HEAD' === $request->get_method() ) { return null; diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php index b5c2071cd8..cf3af6d0d8 100644 --- a/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php +++ b/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php @@ -271,6 +271,9 @@ class WP_REST_Users_Controller extends WP_REST_Controller { } if ( ! empty( $prepared_args['search'] ) ) { + if ( ! current_user_can( 'list_users' ) ) { + $prepared_args['search_columns'] = array( 'ID', 'user_login', 'user_nicename', 'display_name' ); + } $prepared_args['search'] = '*' . $prepared_args['search'] . '*'; } /** diff --git a/wp-includes/shortcodes.php b/wp-includes/shortcodes.php index c6df28b3dc..a8288526c5 100644 --- a/wp-includes/shortcodes.php +++ b/wp-includes/shortcodes.php @@ -159,7 +159,45 @@ function has_shortcode( $content, $tag ) { } /** - * Search content for shortcodes and filter shortcodes through their hooks. + * Returns a list of registered shortcode names found in the given content. + * + * Example usage: + * + * get_shortcode_tags_in_content( '[audio src="file.mp3"][/audio] [foo] [gallery ids="1,2,3"]' ); + * // array( 'audio', 'gallery' ) + * + * @since 6.3.2 + * + * @param string $content The content to check. + * @return string[] An array of registered shortcode names found in the content. + */ +function get_shortcode_tags_in_content( $content ) { + if ( false === strpos( $content, '[' ) ) { + return array(); + } + + preg_match_all( '/' . get_shortcode_regex() . '/', $content, $matches, PREG_SET_ORDER ); + if ( empty( $matches ) ) { + return array(); + } + + $tags = array(); + foreach ( $matches as $shortcode ) { + $tags[] = $shortcode[2]; + + if ( ! empty( $shortcode[5] ) ) { + $deep_tags = get_shortcode_tags_in_content( $shortcode[5] ); + if ( ! empty( $deep_tags ) ) { + $tags = array_merge( $tags, $deep_tags ); + } + } + } + + return $tags; +} + +/** + * Searches content for shortcodes and filter shortcodes through their hooks. * * If there are no shortcode tags defined, then the content will be returned * without any filtering. This might cause issues when plugins are disabled but