Cross-site scripting (XSS) vulnerability in frmCompose.aspx in SmarterTools SmarterMail 1.6.1511 and 1.6.1529 allows remote attackers to inject arbitrary web script or HTML via Javascript to the "check spelling" feature in the compose area.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.007
EPSS Ranking 70.6%