WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `objects/playlistsVideos.json.php` endpoint returns the full video contents of any playlist by ID without any authentication or authorization check. Private playlists (including `watch_later` and `favorite` types) are correctly hidden from listing endpoints via `playlistsFromUser.json.php`, but their contents are directly accessible through this endpoint by providing the sequential integer `playlists_id` parameter. Commit bb716fbece656c9fe39784f11e4e822b5867f1ca has a patch for the issue.

Affected: Packagist: wwbn/avideo

## Summary

The `objects/playlistsVideos.json.php` endpoint returns the full video contents of any playlist by ID without any authentication or authorization check. Private playlists (including `watch_later` and `favorite` types) are correctly hidden from listing endpoints via `playlistsFromUser.json.php`, but their contents are directly accessible through this endpoint by providing the sequential integer `playlists_id` parameter.

## Details

The endpoint at `objects/playlistsVideos.json.php` accepts a `playlists_id` parameter and directly calls `PlayList::getVideosFromPlaylist()` with no ownership or visibility validation:

```php // objects/playlistsVideos.json.php:24-28 if (empty($_REQUEST['playlists_id'])) { die('Play List can not be empty'); } require_once './playlist.php'; $videos = PlayList::getVideosFromPlaylist($_REQUEST['playlists_id']); ```

The `getVideosFromPlaylist()` method at `objects/playlist.php:588` performs a SQL query joining `playlists_has_videos`, `videos`, and `users` tables with no authorization filter:

```php // objects/playlist.php:592-597 $sql = "SELECT v.*, p.*,v.created as cre, p.`order` as video_order " . " FROM playlists_has_videos p " . " LEFT JOIN videos as v ON videos_id = v.id " . " LEFT JOIN users u ON u.id = v.users_id " . " WHERE playlists_id = ? AND v.status != 'i' "; ```

In contrast, the listing endpoint `playlistsFromUser.json.php` correctly enforces visibility at lines 23-27:

```php // objects/playlistsFrom…