server/webmail.php in IceWarp WebMail in IceWarp Mail Server before 10.3.3 allows remote attackers to read arbitrary files, and possibly send HTTP requests to intranet servers or cause a denial of service (CPU and memory consumption), via an XML external entity declaration in conjunction with an entity reference.
IceWarp WebMail in IceWarp Mail Server before 10.3.3 allows remote attackers to obtain configuration information via a direct request to the /server URI, which triggers a call to the phpinfo function.