WWBN AVideo is an open source video platform. In versions up to and including 26.0, multiple vulnerabilities in AVideo's CloneSite plugin chain together to allow a completely unauthenticated attacker to achieve remote code execution. The `clones.json.php` endpoint exposes clone secret keys without authentication, which can be used to trigger a full database dump via `cloneServer.json.php`. The dump contains admin password hashes stored as MD5, which are trivially crackable. With admin access, the attacker exploits an OS command injection in the rsync command construction in `cloneClient.json.php` to execute arbitrary system commands. Commit c85d076375fab095a14170df7ddb27058134d38c contains a patch.

Affected: Packagist: wwbn/avideo

## Summary

Multiple vulnerabilities in AVideo's CloneSite plugin chain together to allow a completely unauthenticated attacker to achieve remote code execution. The `clones.json.php` endpoint exposes clone secret keys without authentication, which can be used to trigger a full database dump via `cloneServer.json.php`. The dump contains admin password hashes stored as MD5, which are trivially crackable. With admin access, the attacker exploits an OS command injection in the rsync command construction in `cloneClient.json.php` to execute arbitrary system commands.

## Details

### Step 1: Clone Key Disclosure

`plugin/CloneSite/clones.json.php:1-8` has zero authentication:

```php <?php require_once '../../videos/configuration.php'; require_once $global['systemRootPath'] . 'plugin/CloneSite/Objects/Clones.php'; header('Content-Type: application/json'); $rows = Clones::getAll(); ?> {"data": <?php echo json_encode($rows); ?>} ```

The response includes the `key` field for every registered clone, which is the sole authentication credential for clone operations.

### Step 2: Database Dump via Stolen Key

`plugin/CloneSite/cloneServer.json.php:73-97` — once the key passes `Clones::thisURLCanCloneMe()`, the server executes `mysqldump` and writes the result to a web-accessible directory:

```php $cmd = "mysqldump -u {$mysqlUser} -p'{$mysqlPass}' --host {$mysqlHost} " ." --default-character-set=utf8mb4 {$mysqlDatabase} {$tablesList} > $sqlFile"; exec($cmd . " 2>&1", $output, $ret…