An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. include/rcmailoutputhtml.php allows XSS via the username template object.
{
"severity": "Medium",
"cpes": [
"cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*"
]
}