WordPress: Arbitrary file deletion in wp-core - guides towards RCE and information disclosure

Vulnerable place 1: wp-admin/post.php $newmeta'thumb' is placed into DB not sanitized directly from user input. case 'editattachment': checkadminreferer'update-post' . $postid; // Don't let these be changed unset$POST'guid'; $POST'posttype' = 'attachment'; // Update the thumbnail filename $newmet...