Cross-site request forgery (CSRF) vulnerability in util.pl in @Mail WebMail 4.51, and util.php in 5.x before 5.03, allows remote attackers to modify arbitrary settings and perform unauthorized actions as an arbitrary user, as demonstrated using a settings action in the SRC attribute of an IMG element in an HTML e-mail.
@Mail WebMail Client in AtMail Open-Source before 1.05 allows remote attackers to execute arbitrary code via an e-mail attachment with an executable extension, leading to the creation of an executable file under tmp/.