program/include/rcube_message.php
@@ -473,6 +473,10 @@ // attachment encapsulated within message/rfc822 part needs further decoding (#1486743) else if ($part_orig_mimetype == 'message/rfc822') { $this->parse_structure($mail_part, true); // list as attachment as well (mostly .eml) if (!empty($mail_part->filename)) $this->attachments[] = $mail_part; } // is a regular attachment (content-type name regexp according to RFC4288.4.2) else if (preg_match('/^[a-z0-9!#$&.+^_-]+\/[a-z0-9!#$&.+^_-]+$/i', $part_mimetype)) {