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Ignore:
Timestamp:
10/12/2023 02:43:19 PM (8 months ago)
Author:
davidbaumwald
Message:

Grouped backports to the 4.6 branch.

  • Comments: Prevent users who can not see a post from seeing comments on it.
  • Shortcodes: Restrict media shortcode ajax to certain type.
  • REST API: Ensure no-cache headers are sent when methods are overridden.
  • Prevent unintended behavior when certain objects are unserialized.

Merges [56834], [56835], [56836], and [56838] to the 4.6 branch.
Props xknown, jorbin, joehoyle, timothyblynjacobs, peterwilsoncc, ehtis, tykoted, antpb, rmccue.

File:
1 edited

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  • branches/4.6/src/wp-admin/includes/ajax-actions.php

    r55783 r56859  
    30533053    $shortcode = wp_unslash( $_POST['shortcode'] );
    30543054
     3055    // Only process previews for media related shortcodes:
     3056    $found_shortcodes = get_shortcode_tags_in_content( $shortcode );
     3057    $media_shortcodes = array(
     3058        'audio',
     3059        'embed',
     3060        'playlist',
     3061        'video',
     3062        'gallery',
     3063    );
     3064
     3065    $other_shortcodes = array_diff( $found_shortcodes, $media_shortcodes );
     3066
     3067    if ( ! empty( $other_shortcodes ) ) {
     3068        wp_send_json_error();
     3069    }
     3070
    30553071    if ( ! empty( $_POST['post_ID'] ) ) {
    30563072        $post = get_post( (int) $_POST['post_ID'] );
     
    30593075    // the embed shortcode requires a post
    30603076    if ( ! $post || ! current_user_can( 'edit_post', $post->ID ) ) {
    3061         if ( 'embed' === $shortcode ) {
     3077        if ( in_array( 'embed', $found_shortcodes, true ) ) {
    30623078            wp_send_json_error();
    30633079        }
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