The remote web server is hosting an application that is affected by a security bypass vulnerability.
The remote web server is hosting Dada Mail, a web-based mailing list application. The installed version is earlier than 4.0.2. Such versions, when using the 'Dada Bridge' plugin, are potentially affected by a security bypass vulnerability because the application does not verify that the sender of an email is a member of a list. An attacker could exploit this flaw to spam the email list.
Upgrade to Dada Mail 4.0.2 or later.