A reflected Cross-Site Scripting (XSS) vulnerability in Fortinet FortiMail 5.1 and earlier, 5.2.0 through 5.2.9, and 5.3.0 through 5.3.9 customized pre-authentication webmail login page allows attacker to inject arbitrary web script or HTML via crafted HTTP requests.

An unauthenticated XSS vulnerability with FortiMail 5.0.0 - 5.2.9 and 5.3.0 - 5.3.8 could allow an attacker to execute arbitrary scripts in the security context of the browser of a victim logged in FortiMail, assuming the victim is social engineered into clicking an URL crafted by the attacker.

FortiMail 5.0.3 through 5.2.3 allows remote administrators to obtain credentials via the "diag debug application httpd" command.

Cross-site scripting (XSS) vulnerability in the Web Action Quarantine Release feature in the WebGUI in Fortinet FortiMail before 4.3.9, 5.0.x before 5.0.8, 5.1.x before 5.1.5, and 5.2.x before 5.2.3 allows remote attackers to inject arbitrary web script or HTML via the release parameter to module/releasecontrol.

Multiple cross-site scripting (XSS) vulnerabilities in admin/FEAdmin.html in Fortinet FortiMail before 4.3.4 on FortiMail Identity-Based Encryption (IBE) appliances allow user-assisted remote attackers to inject arbitrary web script or HTML via (1) the Add field for the Black List under Antispam Management User Preferences or (2) the User name field for the Personal Black/White List in the AntiSpam section.