The password reset feature in the Spam Quarantine HTTP interface for MailMarshal SMTP 6.2.0.x before 6.2.1 allows remote attackers to modify arbitrary account information via a UserId variable with a large amount of trailing whitespace followed by a malicious value, which triggers SQL buffer truncation due to length inconsistencies between variables.

Multiple cross-site scripting (XSS) vulnerabilities in the delegated spam management feature in the Spam Quarantine Management (SQM) component in MailMarshal SMTP 6.0.3.8 through 6.3.0.0 allow user-assisted remote authenticated users to inject arbitrary web script or HTML via (1) the list of blocked senders or (2) the list of safe senders.